WO2017221851A1 - Direct-current power switching control device and power generation system - Google Patents

Direct-current power switching control device and power generation system Download PDF

Info

Publication number
WO2017221851A1
WO2017221851A1 PCT/JP2017/022427 JP2017022427W WO2017221851A1 WO 2017221851 A1 WO2017221851 A1 WO 2017221851A1 JP 2017022427 W JP2017022427 W JP 2017022427W WO 2017221851 A1 WO2017221851 A1 WO 2017221851A1
Authority
WO
WIPO (PCT)
Prior art keywords
power
power generation
value
unit
transmission line
Prior art date
Application number
PCT/JP2017/022427
Other languages
French (fr)
Japanese (ja)
Inventor
茂 福元
順一 中溝
栄稔 宮原
秀一 石原田
Original Assignee
株式会社福元技研
トランスパシフィックＰｏｗｅｒｓ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社福元技研, トランスパシフィックＰｏｗｅｒｓ株式会社 filed Critical 株式会社福元技研
Priority to JP2018524059A priority Critical patent/JP7018649B2/en
Publication of WO2017221851A1 publication Critical patent/WO2017221851A1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/26—Casings; Parts thereof or accessories therefor
    • H02B1/40—Wall-mounted casings; Parts thereof or accessories therefor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00—Circuit arrangements for dc mains or dc distribution networks
    • H02J1/001—Hot plugging or unplugging of load or power modules to or from power distribution networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

Definitions

  • the present invention provides a DC power switching control device that switches and controls transmission of DC power for each of a plurality of power generation units when sending DC power generated by a solar panel or other power generation device to a power conditioner.
  • the present invention relates to a power generation system including the switching control device.
  • DC power generated by a power generation device such as a solar panel
  • a power conditioner sent to a home or office via a transmission line, and used for various loads such as electric lights and equipment.
  • Some power is sold to power companies through commercial grids.
  • the capacity of power conditioners is determined individually (for example, 4.5 kW and 5.5 kW for home use, and 100 kW and 250 kW for commercial use, etc.).
  • the capacity of the power conditioner is determined according to the amount, and when adding a solar panel, the power conditioner is added or replaced with a large capacity type.
  • Patent Documents 1 to 2 Conventionally, there has been proposed a control method for increasing power generation efficiency in solar power generation (see Patent Documents 1 to 2).
  • the power conditioner generally determines the capacity according to the maximum power generation amount of the solar panel as described above. However, there are only a few days in which the maximum power generation amount can be obtained throughout the year. Including the percentage of cloudy or rainy days in the daytime, the efficiency of power conditioners used throughout the year remained low, and sufficient power output was not obtained for the capacity of power conditioners. .
  • the present invention has been made in view of the above circumstances, and is capable of switching and controlling the transmission of DC power for each of a plurality of power generation units when sending DC power generated by a solar panel or other power generator to a power conditioner.
  • An object of the present invention is to provide a switching control device and a power generation system.
  • a DC power switching control device includes: In a power generation system including a power generation apparatus including a plurality of power generation units and a plurality of transmission lines that transmit DC power generated for each power generation unit, In transmitting DC power generated by each power generation unit to the power conditioner, In the middle of each transmission line, a current sensor that detects a current value of DC power generated for each power generation unit, a voltage sensor that detects a voltage value of DC power generated for each power generation unit, and a control from the control unit Each switch unit for switching the power transmission line between connection mode and open mode for each power generation unit by a signal is provided, An operation value is set based on a specified capacity of the power conditioner, and a total value of DC power for each power generation unit calculated from the current value detected by the current sensor and the voltage value detected by the voltage sensor is When the total value of DC power exceeds the operating value, the control unit connects one or more changeover switch units so that the total value of DC power transmitted to the power conditioner is lower than the operating value.
  • a first feature is to switch
  • a DC power switching control device includes: After the one or more changeover switch units are switched from the connection mode to the open mode, when the total value of DC power again exceeds the operating value, the control unit selects one or more changeover switches among the remaining changeover switch units.
  • the second feature is that the part is switched from the connection mode to the release mode.
  • a DC power switching control device includes:
  • a third feature is that the changeover switch unit is sequentially switched from the connection mode to the open mode according to a preset order each time the total value of the DC power exceeds the operation value.
  • a DC power switching control device includes: The operation value is set as an upper operation value, a lower operation value is set separately from the upper operation value, and when the total value of the DC power is lower than the lower operation value, the control unit is switched to the open mode.
  • the fourth feature is that the mode is sequentially switched to the connection mode.
  • a DC power switching control device includes: Instead of providing a current sensor and voltage sensor for each power generation unit in the middle of each transmission line, they merge downstream of the selector switch provided for each transmission line in the middle of each transmission line, and in the middle of the transmission line toward the power conditioner
  • the fifth feature is that a pair of current sensor and voltage sensor is provided.
  • the power generation system includes: A power generation system including a power generation device including a plurality of power generation units and a plurality of transmission lines for transmitting DC power generated for each power generation unit, wherein the switching control device is any one of the first to fifth features It is characterized by providing.
  • a DC power switching control device includes: In a power generation system including a power generation device including a plurality of power generation units, a plurality of power transmission lines that transmit DC power generated for each power generation unit, and a power storage device that branches and stores DC power transmitted from each power transmission line , In transmitting DC power generated for each power generation unit to the power conditioner and / or branching to the power storage device and transmitting power, In the middle of each transmission line, a current sensor that detects a current value of DC power generated for each power generation unit, a voltage sensor that detects a voltage value of DC power generated for each power generation unit, and a control from the control unit Each switch unit for switching the power transmission line between connection mode and open mode for each power generation unit by a signal is provided, A current sensor that detects the current value of DC power that is branched and transmitted for each power generation unit in the middle of the transmission line that branches from each power transmission line toward the power storage device, and a DC that is branched and transmitted for each power generation unit A voltage sensor that detect
  • a DC power switching control device includes: After switching one or more changeover switch parts on the power conditioner side from the connection mode to the open mode, and after switching one or more changeover switch parts on the power storage device side from the open mode to the connection mode, When the total value of DC power again exceeds the operating value, the control unit switches one or more changeover switch units from the connection mode to the open mode among the remaining changeover switch units on the power conditioner side, and A seventh feature is that one or a plurality of changeover switch portions among the remaining changeover switch portions are switched from the open mode to the connection mode.
  • a DC power switching control device includes: Each time the total value of DC power exceeds the operating value, the switch on the power conditioner side is sequentially switched from the connection mode to the open mode in accordance with a preset order, and the switch on the power storage device side is sequentially switched from the open mode to the connection mode. Switching is an eighth feature.
  • a DC power switching control device includes: The operating value is set as an upper operating value, a lower operating value is set separately from the upper operating value, and when the total value of DC power falls below the lower operating value, the control unit switches to the open mode on the power conditioner side.
  • a ninth feature is that the changeover switch unit sequentially switched to the connection mode and the changeover switch unit switched to the connection mode on the power storage device side are sequentially switched to the open mode.
  • a DC power switching control device includes: Instead of providing a current sensor and voltage sensor for each power generation unit in the middle of each transmission line, they merge downstream of the selector switch provided for each transmission line in the middle of each transmission line, and in the middle of the transmission line toward the power conditioner
  • the tenth feature is that a pair of current sensor and voltage sensor is provided.
  • the power generation system includes: A power generation system including a power generation device including a plurality of power generation units, a plurality of power transmission lines that transmit DC power generated for each power generation unit, and a power storage device that branches and stores the DC power transmitted from each power transmission line A switching control device according to any one of the sixth to tenth features is provided.
  • high-level DC power close to the specified capacity can be stably transmitted to the power conditioner without exceeding the specified capacity of the power conditioner. It is possible to increase the output power of the power supply and increase the power supply to the load of the home or office and the commercial system.
  • the DC power generated by the power generator is finely controlled for each power generation unit so that the power can be branched and transmitted to the power conditioner and the power storage device. There is an effect that it can be used.
  • the output amount of power from the power generation system can be controlled regardless of the number and scale of solar panels and other power generation devices installed, so the power generation amount applied for by the country or power company is exceeded. Without the above, stable power generated below the upper limit can be transmitted to the power conditioner.
  • the 1st Embodiment of this invention is shown, The block diagram of the electric power generation system containing the switching control apparatus of direct-current power, The block diagram of the direct-current power switching part in the switching control apparatus shown in FIG. Explanatory drawing showing the operation panel, The figure for demonstrating the effect
  • reference numeral S1 denotes a power generation system.
  • the power generation system S1 includes a plurality of power generation devices (solar cell arrays) 100A to 100C and a DC power switching control device 200, and transmits DC power generated by each of the power generation devices 100A to 100C to the power conditioner 300. It is like that.
  • the power generation device 100A is an existing solar cell array, and the power generation devices 100B and 100C indicate additional solar cell arrays.
  • Each of the power generation devices 100A to 100C includes a plurality of power generation units (strings) formed by connecting a plurality of solar cell panels (modules) in series.
  • the existing power generation device 100A has two rows of power generation units 110A1 and 110A2
  • the additional power generation device 100B has two rows of power generation units 110B1 and 110B2
  • the additional power generation device 100C has two rows of power generation units 110C1 and 110C2. I have.
  • the power generation system S1 is set such that the total generated power of the power generation apparatuses 100A to 100C, that is, the total value of the maximum generated power of the power generation units 110A1 to 110C2 exceeds the specified capacity of the power conditioner 300.
  • the power transmission lines 121 extend from the power generation units 110A1 and 110A2 in two rows to the switching control apparatus 200 via the connection box 130 or directly.
  • the additional power generation device 100B power transmission lines 121 extend from the power generation units 110B1 and 110B2 in two rows to the switching control device 200, respectively.
  • the additional power generation device 100C power transmission lines 121 extend from the power generation units 110C1 and 110C2 in two rows to the switching control device 200, respectively.
  • each power transmission line 121 of each power generation unit 110A1 to 110C2 merges into one power transmission line 122 from the switching control device 200 via the connection box 130 or not, and extends to the power conditioner 300.
  • the DC power switching control device 200 switches and controls transmission of DC power generated by the power generation units 110A1 to 110C2 of the power generation devices 100A to 100C based on the upper and lower operation values.
  • a DC power switching unit 210, a control unit 220, and an operation panel 230 are provided.
  • the switching control device 200 is equipped with a communication unit 250 that can communicate with a communication terminal 240 via a server (not shown) connected to the Internet or a communication line 131, and the communication unit 250 receives a control signal from the control unit 220.
  • the power generation status (current value, voltage value) and the switching status are uploaded from the server 250 to the server via the Internet, and the information terminal 240 is equipped with the same function as the operation panel 230, so that it can be remotely operated from the communication terminal 240. Alternatively, the power generation status and the switching status can be received by the communication terminal 240.
  • the DC power switching unit 210 corresponds to each of the power generation units 110A1 to 110C2, and measures the current value of the DC power sent through each power transmission line 121 in the middle of each power transmission line 121.
  • a voltage sensor 212 for measuring the voltage value of DC power
  • the changeover switch sections 213A1 to 213C2 connect each power transmission line 121 to either the connected mode or the open mode (non-connected mode) for each of the power generation units 110A1 to 110C2 by a control signal based on the upper and lower operation values from the control section 220. It is supposed to switch to.
  • a changeover switch element power MOS-FET, IGBT, etc.
  • IGBT IGBT
  • the control unit 220 adds the DC power (W) calculated from the current value (A) detected by the current sensor 211 and the voltage value (V) detected by the voltage sensor 212 for each of the power generation units 110A1 to 110C2.
  • the changeover switch sections 213A1 to 213C2 are sequentially switched from the connection mode to the open mode according to a preset order, and the DC power
  • the changeover switch part switched to the open mode is sequentially switched back to the connection mode.
  • the upper and lower operation values are set based on the prescribed capacity of the power conditioner 300.
  • FIG. 3 shows the operation panel 230 of the control unit 220.
  • the operation panel 230 is provided with a measurement display unit 231 and an operation condition setting unit 232.
  • the measurement display unit 231 includes a current value (A) and a voltage value of DC power for each of the power generation units 110A1 and 110A2 of the power generation device 100A, for each of the power generation units 110B1 and 110B2 of the power generation device 110B, and for each of the power generation units 110C1 and 110C2 of the power generation device 100C.
  • the total value of (V), DC power (W), and DC power can be displayed, and although not shown, the switching status of the selector switches 213A1 to 213C2 can be displayed.
  • the operation condition setting unit 252 includes upper and lower operation values for operating the changeover switch units 213A1 to 213C2, an operation time of the changeover switch units 213A1 to 213C2 (does not return to the original mode until the set time elapses), a changeover switch unit
  • the operation order (switching order) of 213A1 to 213C2 can be set respectively.
  • it can also set as an operation
  • the measurement display unit 231 and the operating condition setting unit 232 of the operation panel 230 can be displayed on the display screen of the information terminal 240.
  • the power generation units 110A1 to 110C2 Each time, the current value (A), voltage value (V), DC power (W), and total value of DC power of the DC power are displayed on the information terminal 240, and the switching order and switching status of the power generation units 110A1 to 110C2 are displayed. Can be monitored remotely.
  • the upper and lower operation values of the changeover switch portions 213A1 to 213C2 the operation time, and the operation order (switching order) of the changeover switch portions can be set.
  • the power conditioner 300 converts DC power input from the power transmission line 122 into AC power.
  • the AC power converted by the power conditioner 300 is transmitted to the home or business via the power transmission line 123 and the distribution board 400.
  • Power is transmitted to a load (electric light, air conditioner, equipment, etc.) 500 in the station. Further, when there is surplus power, power can be transmitted from the distribution board 400 to the power company via the power transmission line 124.
  • Signals can be transmitted and received between the power conditioner 300 and the control unit 220 through the communication line 132.
  • the control unit 220 takes in the output schedule data of the power company stored in the server via the communication unit 250, and power An output command (output suppression, output increase) signal can be transmitted to the conditioner 300.
  • a sensor (current, voltage) 214 is provided in the middle of the power transmission line 123 from the power conditioner 300 to the distribution board 400, and the AC power value output from the power conditioner 300 is detected by the sensor 214 and passes through the communication line 133. Then, it is transmitted to the control unit 220, and the output value of the AC power can be displayed on the operation panel 230 or the information terminal 240. By displaying the AC power value output from the power conditioner 300 on the information terminal 240, the power conditioner 300 can be remotely monitored. Further, a branching portion 125 is provided in the middle of the power transmission line 122 from the switching control device 200 to the power conditioner 300, and a part or all of the direct current power directed to the power conditioner 300 is branched to the direct current load 550 for transmission. You may do it.
  • DC power is transmitted to the switching control device 200 via each power transmission line 121.
  • the current value and voltage value of DC power are measured by the current sensor 211 and voltage sensor 212 for each power generation unit, and the control unit 220 calculates DC power from the measured current value and voltage value. Further, the DC power is summed for each power generation unit.
  • the measured current value and voltage value, the calculated DC power and the total value thereof are displayed on the measurement display unit 231 of the operation panel 230 shown in FIG. It can also be displayed on the information terminal 240 for remote monitoring.
  • the control unit 220 sends an operation signal to the first changeover switch unit 213A1,
  • the first changeover switch unit 213A1 switches from the connection mode to the release mode.
  • the DC power from the first power generation unit 110A1 is not transmitted to the power conditioner 300, the total value of the DC power is reduced below the upper operating value.
  • the control unit 220 sends an operation signal to the second changeover switch unit 213A2,
  • the second changeover switch unit 213A2 switches from the connection mode to the release mode.
  • the control unit 220 causes the third changeover switch unit 213B1.
  • the third changeover switch 213B1 is switched from the connection mode to the release mode.
  • DC power transmitted to 300 can be maintained at a high value below a specified capacity, and output power from the power conditioner 300 can be maintained at a high value without being affected by changes or fluctuations in the amount of sunlight irradiated. Can do.
  • the control unit 220 sends an operation signal to the second changeover switch unit 213A2, and the second changeover switch unit. 213A2 switches from the open mode to the connected mode.
  • the DC power from the first power generation unit 110A1 and the second power generation unit 110A2 is transmitted again to the power conditioner 300, so that the total value of the DC power again rises above the lower operating value.
  • the control unit 220 sends an operating signal to the third changeover switch unit 213B1, and the third switching is performed.
  • the switch unit 213B1 switches from the open mode to the connection mode.
  • the DC power from the power generation unit is transmitted again to the power conditioner 300 from the first to the third, and the total value of the DC power again rises above the lower operating value.
  • the first to plural switching switches are operated in order to switch from the open mode to the connected mode, thereby enabling the power conditioner.
  • the DC power transmitted to 300 can be maintained at a value close to the specified capacity above the lower operating value, and the output power of the power conditioner 300 is high during the day without being affected by changes or fluctuations in the amount of sunlight. Value can be maintained.
  • symbol S2 indicates a power generation system that also serves as a power storage system
  • symbol 600 indicates a power storage device.
  • symbol is attached
  • the power generation system S2 includes a plurality of power generation devices (solar cell arrays) 100A to 100C, a switching control device 200 ′, and a power storage device 600, and direct current power generated by each of the power generation devices 100A to 100C is converted into a power conditioner 300.
  • a part or all of the DC power generated by each of the power generation devices 100A to 100C is branched to the power storage device 600 to be transmitted and stored.
  • the power generation device 100A is an existing solar cell array, and the power generation devices 100B and 100C indicate additional solar cell arrays.
  • Each of the power generation devices 100A to 100C includes a plurality of power generation units (strings) formed by connecting a plurality of solar battery panels in series.
  • the power generation system S2 is set so that the total generated power of the power generation apparatuses 100A to 100C, that is, the total value of the maximum generated power of each power generation unit exceeds the specified capacity of the power conditioner 300.
  • the power transmission lines 121 extend from the power generation units 110A1 and 110A2 of the power generation device 100A to the DC power switching unit 210 ′ of the switching control device 200 ′ via the connection box 130 or directly. ing.
  • a power transmission line 121 extends from each power generation unit 110B1 and 110B2 of the power generation device 100B to the DC power switching unit 210 'of the switching control device 200'. From each of the power generation units 110C1 and 110C2 of the power generation apparatus 100C, a power transmission line 121 extends to the DC power switching unit 210 'of the switching control apparatus 200'.
  • the power transmission lines 121 of the power generation units 110A1 to 110C2 extend from the DC power switching unit 210 'of the switching control device 200' to the connection box 130, merge into one power transmission line 122, and extend to the power conditioner 300.
  • the power transmission lines 121 of the power generation units 110A1 to 110C2 branch from the respective branch portions 125 (see FIG. 6) toward the power storage device 600, and the branched power transmission lines 126 merge into one power transmission line 127, The power storage device 600 extends.
  • a power transmission line 128 extends from the power storage device 600 toward the power conditioner 300 and joins the one power transmission line 122 described above.
  • the switching control device 200 ′ switches and controls the transmission of the DC power generated by the power generation units 110A1 to 110C2 of the power generation devices 100A to 100C based on the upper and lower operation values. As shown in FIG. Inside the section 210 ′, the current value of the DC power sent through each power transmission line 129 in the middle of the power transmission line 129 branched from the branching section 125 toward the power conditioner 300 corresponding to each power generation unit 110A1 to C2.
  • a current sensor 211 for measuring, a voltage sensor 212 for measuring the voltage value of DC power, and a changeover switch unit 213A1, 213A2, 213B1, 213B2, 213C1, 213C2 are provided.
  • Switch portions 213A3, 213A4, 213B3, 213B4, 213C3, and 213C4 are provided.
  • the changeover switch sections 213A3 to 213C4 connect the power transmission lines 126 for the power generation units 110A1 to 110C2 in accordance with the control signals based on the upper and lower operating values from the control section 220 in cooperation with the power conditioner 300 side and the power storage device 600 side. And switching to either open mode (disconnected mode). That is, when the changeover switch unit (for example, the changeover switch unit 213A1) on the power conditioner 300 side is switched from the connection mode to the open mode for each of the power generation units 110A1 to 110C3 by the control signal based on the upper and lower operation values from the control unit 220.
  • the changeover switch unit for example, the changeover switch unit 213A1
  • the changeover switch unit on the power storage device 600 side switches from the open mode to the connection mode, and the changeover switch unit on the power storage device 600 side (for example, the changeover switch unit 213A3) changes from the connection mode to the open mode.
  • the changeover switch unit on the power conditioner 300 side (the changeover switch unit 213A1 in the case of the above example) is switched from the open mode to the connection mode.
  • each DC power is transmitted to the power conditioner 300, and when the total value of each DC power exceeds the upper operating value, the amount exceeding the upper operating value.
  • DC power can be transmitted to the power storage device 600 and stored.
  • the controller 220 adds the DC power (W) calculated from the current value (A) detected by the current sensor 211 and the voltage value (V) detected by the voltage sensor 212 for each power generation unit 110A1 to B2.
  • the changeover switches 213A1 to 213C2 on the power conditioner 300 side are sequentially switched from the connected mode to the open mode according to a preset order.
  • the changeover switches 213A3 to 213C4 on the power storage device 600 side are sequentially switched from the open mode to the connection mode, and when the total value of DC power falls below the lower operating unit, the changeover switch switched to the open mode on the power conditioner 300 side From the open mode to the connection mode and from the storage device 600 side to the connection mode Ri in place of the switching unit from a connected mode open mode, so that the back sequentially switched.
  • the upper and lower operation values are set based on the prescribed capacity of the power conditioner 300.
  • the operation panel 230 shown in FIG. 5 has basically the same configuration as the operation panel 230 shown in FIG.
  • a communication line 134 extends from the power storage device 600 to the control unit 220, and the power storage status of the power storage device 600 and the power supply status from the power storage device 600 are displayed on the measurement display unit, or the power storage device 600 receives power from the operation panel 230 or the information terminal 240.
  • a power supply command can be transmitted to the device 600.
  • the function of the information terminal 240 can also be performed similarly to the said embodiment.
  • DC power is transmitted from the power generation units 110A1 to 110C2 of the power generation devices 100A to 100C to the switching control device 200 ′ via the power transmission lines 121. Is done.
  • the switching control device 200 ′ the current value and voltage value of the DC power are measured by the current sensor 211 and the voltage sensor 212 for each of the power generation units 110A1 to 110C2, and the control unit 220 determines the DC power from the measured current value and voltage value.
  • the power is calculated, and the DC power is totaled for each of the power generation units 110A1 to 110C2.
  • the measured current value and voltage value, the calculated DC power and the total value thereof are displayed on the measurement display unit of the operation panel 230 shown in FIG.
  • the control part 220 will be the 1st changeover switch part 213A1 by the side of the power conditioner 300, and the electrical storage apparatus 600 side.
  • An operation signal is sent to the first changeover switch portion 213A3, the first changeover switch portion 213A1 on the power conditioner 300 side is changed from the connection mode to the release mode, and the first changeover switch portion 213A3 on the power storage device 600 side is changed from the release mode. Switch to connected mode.
  • the DC power from the first power generation unit 110A1 is not transmitted to the power conditioner 300 but is transmitted to the power storage device 600.
  • the total value of the DC power input to the power conditioner 300 is reduced below the upper operating value, and a part of the DC power is stored in the power storage device 600.
  • the control unit 220 is connected to the second changeover switch unit 213A2 on the power conditioner 300 side and the power storage device 600 side.
  • An operation signal is sent to the second changeover switch portion 213A4, the second changeover switch portion 213A2 on the power conditioner 300 side is changed from the connection mode to the release mode, and the second changeover switch portion 213A4 on the power storage device 600 side is changed from the release mode. Switch to connected mode.
  • the DC power from the second power generation unit 110A2 is not transmitted to the power conditioner 300 but is transmitted to the power storage device 600.
  • the total value of the DC power input to the power conditioner 300 is reduced below the upper operating value, and a part of the DC power is stored in the power storage device 600.
  • the control unit 220 causes the third changeover switch unit 213B1 on the power conditioner 300 side. Then, an operation signal is sent to the third changeover switch portion 213B3 on the power storage device 600 side, and the third changeover switch portion 213B1 on the power conditioner 300 side is changed from the connection mode to the release mode, and the third changeover on the power storage device 600 side is performed.
  • the switch unit 213B3 is switched from the open mode to the connection mode.
  • the DC power from the third power generation unit 110B1 is not transmitted to the power conditioner 300 but is transmitted to the power storage device 600.
  • the total value of the DC power input to the power conditioner 300 is reduced to the upper operating value or less, and part of the generated power is stored in the power storage device 600.
  • the first to the plurality of changeover switch units on the power conditioner 300 side and the power storage device 600 side are sequentially operated,
  • the direct-current power transmitted to the power conditioner 300 can be maintained at a value close to the specified capacity.
  • the output power of the power conditioner 300 can be maintained at a high value during the day without being affected by changes or fluctuations in the amount of irradiation.
  • surplus produced power can be stored in the power storage device 600, and can be supplied to the load 500 through the power conditioner 300 as needed at night or the like, and further sold to an electric power company.
  • the control unit 220 sends an operation signal to the first changeover switch unit 213A1 on the power conditioner 300 side and the first changeover switch unit 213A3 on the power storage device 600 side.
  • the first changeover switch portion 213A1 on the power conditioner 300 side is switched from the open mode to the connection mode, and the first changeover switch portion 213A3 on the power storage device 600 side is switched from the connection mode to the open mode.
  • the DC power from the first power generation unit 110A1 is transmitted again to the power conditioner 300, so that the total value of the DC power rises above the lower operating value.
  • the control unit 220 controls the second changeover switch unit 213A2 on the power conditioner 300 side and the power storage device 600 side.
  • An operation signal is sent to the second changeover switch part 213A4, the second changeover switch part 213A2 on the power conditioner 300 side is changed from the open mode to the connection mode, and the second changeover switch part 213A4 on the power storage device 600 side is changed from the connection mode. Switch to open mode respectively.
  • the DC power from the second power generation unit 110A2 is transmitted again to the power conditioner 300, so that the total value of the DC power rises above the lower operating value.
  • the control unit 220 includes the third changeover switch unit 213B1 on the power conditioner 300 side and the power storage device 600.
  • An operation signal is sent to the third changeover switch portion 213B3 on the side, and the third changeover switch portion 213B1 on the power conditioner 300 side is changed from the open mode to the connection mode, and the third changeover switch portion 213B3 on the power storage device 600 side is connected. Switch from mode to release mode.
  • the DC power from the third power generation unit 110B1 is transmitted again to the power conditioner 300, so that the total value of the DC power rises above the lower operating value.
  • the first to plural changeover switches on the power conditioner 300 side and the power storage device 600 side are operated in order, and the power
  • the direct-current power transmitted to the power conditioner 300 can be maintained at a value close to the specified capacity.
  • the output power of the power conditioner 300 can be maintained at a high value during the day without being affected by changes or fluctuations in the irradiation amount.
  • power can be supplied from the power storage device 600 to the power conditioner 300.
  • FIG. 7 shows a third embodiment of the present invention.
  • a current sensor 211 and a voltage sensor 212 for each power transmission line 121 provided in the embodiment.
  • a set of current sensor 211 ′ and voltage sensor 212 ′ are provided in the middle of the transmission line 122 that merges downstream of the changeover switch sections 213 A 1 to 213 C 2 and heads for the power conditioner 300.
  • the current value and the voltage value detected from the current sensor 211 ′ and the voltage sensor 212 ′ are transmitted to the control unit 220, and the DC power calculated by the control unit 220 based on the current value and the voltage value is transmitted by the control unit 220 in the same manner as in the above embodiment.
  • the changeover switches 213A1 to 213C2 are sequentially switched from the connection mode to the open mode according to a preset order, When the total value of the electric power is lower than the lower operating part, the changeover switch part switched to the open mode is switched back to the connection mode sequentially.
  • the changeover switches 213A3 to 213C4 on the power storage device 600 side are sequentially switched from the open mode to the connection mode and the total value of DC power falls below the lower operating unit,
  • the changeover switch unit switched to the open mode on the 300 side is switched from the open mode to the connection mode, and the changeover switch unit switched to the connection mode on the power storage device 600 side is sequentially switched back from the connection mode to the open mode.
  • the current sensor 211 ′ and the voltage sensor 212 ′ illustrated in FIG. 7 may be provided in the middle of the power transmission line 122 in combination with the current sensor 211 and the voltage sensor 212 for each power transmission line 121 illustrated in FIGS. .
  • the present invention is not limited to this. All of the existing power generators may be used, or all of the new power generators may be used. Moreover, the number of power generation devices may be one. Further, the power generation units in the power generation apparatus are not limited to two rows, and may be a large number of examples. Further, the power transmission lines 121 to 129 are not limited to a single line but may be a plurality of lines.
  • the switching control device of the present invention increases the amount of generated power (Wh) by increasing the number of power generation facilities, but limits the power generation power (W) of the power generation facilities so as not to exceed the set upper limit.
  • the power generator to which the switching control device of the present invention is applied is not limited to a solar power generator.
  • Other renewable energy can be applied to other power generation devices such as wind power, hydraulic power, and biotechnology, and can also be applied to a combination of a solar power generation device and a renewable energy such as a wind power generation device.
  • it can be applied not only to renewable energy but also to conventional power generators such as thermal power and coal.
  • the DC power switching control device can be widely used as a device for switching control of transmission of DC power generated for each power generation unit of the power generation device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Direct Current Feeding And Distribution (AREA)
  • Distribution Board (AREA)

Abstract

[Abstract] To provide a switching control device and a power generation system with which the transmission of direct-current power can be switched and controlled for each of a plurality of power generation units when transmitting to a power conditioner direct-current power generated by power generation devices such as solar panels. [Problem] [Solution] A power generation system equipped with power transmission lines that transmit direct-current power to each power generation unit contained in a power generation device, wherein a current sensor 211 and a voltage sensor 212 for detecting the current value and the voltage value for each power generation unit, and a changeover switch unit that switches between a connected mode and an open mode and a power storage mode for each power generation unit on the basis of a control signal from a control unit 220, are provided at an intermediate point in each power transmission line 121 for each power generation unit. An operation value is set based on a prescribed capacity of a power conditioner 300, a total value of the direct-current power for each power generation unit calculated from the detected current value and the detected voltage value is compared to the operation value, and when the total value of the direct-current power exceeds the operation value, the control unit 220 controls the changeover switch unit.

Description

直流電力の切替制御装置および発電システムDC power switching control device and power generation system
　本発明は、太陽光パネルやその他の発電装置で発電された直流電力をパワーコンディショナーに送るにあたり、複数の発電ユニット毎に直流電力の送電を切替え制御するようにした直流電力の切替制御装置と、同切替制御装置を含む発電システムに関するものである。 The present invention provides a DC power switching control device that switches and controls transmission of DC power for each of a plurality of power generation units when sending DC power generated by a solar panel or other power generation device to a power conditioner. The present invention relates to a power generation system including the switching control device.
　発電装置、例えば太陽光パネルで発電された直流電力はパワーコンディショナーで交流電力に変換され、送電線を経由して家庭や事業所に送られ、電灯や機器等の各種負荷に利用されている。また一部の電力は商用系統を通じて電力会社に売電される等している。パワーコンディショナーは個々に容量が決まっており（家庭用タイプでは例えば４．５ｋｗ、５．５ｋｗなど、業務用タイプでは例えば１００ｋｗ、２５０ｋｗなど）、このため、通常は太陽光パネルの発電量（最大発電量）にあわせてパワーコンディショナーの容量を決定し、太陽光パネルを増設する場合はパワーコンディショナーを増設するか大容量タイプに交換する等している。 DC power generated by a power generation device, such as a solar panel, is converted into AC power by a power conditioner, sent to a home or office via a transmission line, and used for various loads such as electric lights and equipment. Some power is sold to power companies through commercial grids. The capacity of power conditioners is determined individually (for example, 4.5 kW and 5.5 kW for home use, and 100 kW and 250 kW for commercial use, etc.). The capacity of the power conditioner is determined according to the amount, and when adding a solar panel, the power conditioner is added or replaced with a large capacity type.
　従来より、太陽光発電において、発電効率を高めるような制御方法が提案されている（特許文献１～特許文献２参照）。 Conventionally, there has been proposed a control method for increasing power generation efficiency in solar power generation (see Patent Documents 1 to 2).
特開２０１４－１５８４０１号公報JP 2014-158401 A 特開２０１０－２４５３２０号公報JP 2010-245320 A
　しかしながら、パワーコンディショナーは上述のように一般に太陽光パネルの最大発電量に合わせて容量を決定しているところ、１年間を通して最大発電量が得られる日数は僅かしかなく、年間における曇天日や雨天日の多さ、あるいは日中における曇天や雨天の割合を含めると、年間を通したパワーコンディショナーの利用効率は低いままであり、パワーコンディショナーの容量に対して十分な電力の出力が得られていなかった。 However, the power conditioner generally determines the capacity according to the maximum power generation amount of the solar panel as described above. However, there are only a few days in which the maximum power generation amount can be obtained throughout the year. Including the percentage of cloudy or rainy days in the daytime, the efficiency of power conditioners used throughout the year remained low, and sufficient power output was not obtained for the capacity of power conditioners. .
　本発明は、上記実情に鑑みてなされたもので、太陽光パネルその他の発電装置で発電された直流電力をパワーコンディショナーに送るにあたり、複数の発電ユニット毎に直流電力の送電を切替え制御できる直流電力の切替制御装置と発電システムを提供することを目的とする。 The present invention has been made in view of the above circumstances, and is capable of switching and controlling the transmission of DC power for each of a plurality of power generation units when sending DC power generated by a solar panel or other power generator to a power conditioner. An object of the present invention is to provide a switching control device and a power generation system.
　本発明に係る直流電力の切替制御装置は、
　複数の発電ユニットを備える発電装置と、発電ユニット毎に発電される直流電力を送電する複数の送電線を備える発電システムにおいて、
　発電ユニット毎に発電される直流電力をパワーコンディショナーに送電するにあたり、
　各送電線の途中に、発電ユニット毎に発電される直流電力の電流値を検出する電流センサと、発電ユニット毎に発電される直流電力の電圧値を検出する電圧センサと、制御部からの制御信号により発電ユニット毎に送電線を接続モードと開放モードのいずれかに切り替える切替スイッチ部をそれぞれ設け、
　前記パワーコンディショナーの規定容量に基づいて作動値を設定し、前記電流センサによって検出された電流値と前記電圧センサによって検出された電圧値から算出される発電ユニット毎の直流電力の合計値を前記作動値と比較し、直流電力の合計値が作動値を上回るとき、前記制御部が、パワーコンディショナーに送電する直流電力の合計値が前記作動値を下回るように、一または複数の切替スイッチ部を接続モードから開放モードに切り替えることを第１の特徴とする。 A DC power switching control device according to the present invention includes:
In a power generation system including a power generation apparatus including a plurality of power generation units and a plurality of transmission lines that transmit DC power generated for each power generation unit,
In transmitting DC power generated by each power generation unit to the power conditioner,
In the middle of each transmission line, a current sensor that detects a current value of DC power generated for each power generation unit, a voltage sensor that detects a voltage value of DC power generated for each power generation unit, and a control from the control unit Each switch unit for switching the power transmission line between connection mode and open mode for each power generation unit by a signal is provided,
An operation value is set based on a specified capacity of the power conditioner, and a total value of DC power for each power generation unit calculated from the current value detected by the current sensor and the voltage value detected by the voltage sensor is When the total value of DC power exceeds the operating value, the control unit connects one or more changeover switch units so that the total value of DC power transmitted to the power conditioner is lower than the operating value. A first feature is to switch from the mode to the open mode.
　本発明に係る直流電力の切替制御装置は、
　一または複数の切替スイッチ部を接続モードから開放モードに切り替えた後、直流電力の合計値が再び作動値を上回るとき、前記制御部が、残りの切替スイッチ部のうち、一または複数の切替スイッチ部を接続モードから開放モードに切り替えることを第２の特徴とする。 A DC power switching control device according to the present invention includes:
After the one or more changeover switch units are switched from the connection mode to the open mode, when the total value of DC power again exceeds the operating value, the control unit selects one or more changeover switches among the remaining changeover switch units. The second feature is that the part is switched from the connection mode to the release mode.
　本発明に係る直流電力の切替制御装置は、
　直流電力の合計値が作動値を上回る毎に、予め設定された順序に従って切替スイッチ部を接続モードから開放モードに順次切り替えることを第３の特徴とする。 A DC power switching control device according to the present invention includes:
A third feature is that the changeover switch unit is sequentially switched from the connection mode to the open mode according to a preset order each time the total value of the DC power exceeds the operation value.
　本発明に係る直流電力の切替制御装置は、
　前記作動値は上作動値として設定され、当該上作動値とは別に下作動値を設定し、直流電力の合計値が下作動値を下回るとき、制御部が、開放モードに切り替わった切替スイッチ部を順次接続モードに切り替えることを第４の特徴とする。 A DC power switching control device according to the present invention includes:
The operation value is set as an upper operation value, a lower operation value is set separately from the upper operation value, and when the total value of the DC power is lower than the lower operation value, the control unit is switched to the open mode. The fourth feature is that the mode is sequentially switched to the connection mode.
　本発明に係る直流電力の切替制御装置は、
　各送電線の途中に発電ユニット毎に電流センサと電圧センサを設けずに、各送電線の途中に送電線毎に設けた切替スイッチ部の下流で合流し、パワーコンディショナーに向かう送電線の途中に、一組の電流センサと電圧センサを設けることを第５の特徴とする。 A DC power switching control device according to the present invention includes:
Instead of providing a current sensor and voltage sensor for each power generation unit in the middle of each transmission line, they merge downstream of the selector switch provided for each transmission line in the middle of each transmission line, and in the middle of the transmission line toward the power conditioner The fifth feature is that a pair of current sensor and voltage sensor is provided.
　本発明に係る発電システムは、
　複数の発電ユニットを備える発電装置と、発電ユニット毎に発電される直流電力を送電する複数の送電線を備える発電システムであって、前記第１から第５の特徴のいずれか一の切替制御装置を備えることを特徴とする。 The power generation system according to the present invention includes:
A power generation system including a power generation device including a plurality of power generation units and a plurality of transmission lines for transmitting DC power generated for each power generation unit, wherein the switching control device is any one of the first to fifth features It is characterized by providing.
　本発明に係る直流電力の切替制御装置は、
　複数の発電ユニットを備える発電装置と、発電ユニット毎に発電される直流電力を送電する複数の送電線と、各送電線から送電される直流電力を分岐して蓄電する蓄電装置を備える発電システムにおいて、
　発電ユニット毎に発電される直流電力をパワーコンディショナーに送電しおよび／または蓄電装置に分岐して送電するにあたり、
　各送電線の途中に、発電ユニット毎に発電される直流電力の電流値を検出する電流センサと、発電ユニット毎に発電される直流電力の電圧値を検出する電圧センサと、制御部からの制御信号により発電ユニット毎に送電線を接続モードと開放モードのいずれかに切り替える切替スイッチ部をそれぞれ設け、
　各送電線から分岐して蓄電装置に向かう送電線の途中に、発電ユニット毎に分岐して送電される直流電力の電流値を検出する電流センサと、発電ユニット毎に分岐して送電される直流電力の電圧値を検出する電圧センサと、制御部からの制御信号により発電ユニット毎に分岐後の送電線を接続モードと開放モードのいずれかに切り替え可能な切替スイッチ部をそれぞれ設け、
　前記パワーコンディショナーの規定容量に基づいて作動値を設定し、前記電流センサによって検出された電流値と前記電圧センサによって検出された電圧値から算出される発電ユニット毎の直流電力の合計値を前記作動値と比較し、直流電力の合計値が作動値を上回るとき、前記制御部が、パワーコンディショナーに送電する直流電力の合計値が前記作動値を下回るように、パワーコンディショナー側の一または複数の切替スイッチ部を接続モードから開放モードに切り替え、蓄電装置側の一または複数の切替スイッチ部を開放モードから接続モードに切り替えることを第６の特徴とする。 A DC power switching control device according to the present invention includes:
In a power generation system including a power generation device including a plurality of power generation units, a plurality of power transmission lines that transmit DC power generated for each power generation unit, and a power storage device that branches and stores DC power transmitted from each power transmission line ,
In transmitting DC power generated for each power generation unit to the power conditioner and / or branching to the power storage device and transmitting power,
In the middle of each transmission line, a current sensor that detects a current value of DC power generated for each power generation unit, a voltage sensor that detects a voltage value of DC power generated for each power generation unit, and a control from the control unit Each switch unit for switching the power transmission line between connection mode and open mode for each power generation unit by a signal is provided,
A current sensor that detects the current value of DC power that is branched and transmitted for each power generation unit in the middle of the transmission line that branches from each power transmission line toward the power storage device, and a DC that is branched and transmitted for each power generation unit A voltage sensor that detects the voltage value of the power, and a changeover switch unit that can switch the transmission line after branching for each power generation unit to either the connection mode or the open mode by a control signal from the control unit,
An operation value is set based on a specified capacity of the power conditioner, and a total value of DC power for each power generation unit calculated from the current value detected by the current sensor and the voltage value detected by the voltage sensor is One or more switching on the power conditioner side so that the total value of DC power transmitted to the power conditioner is less than the operation value when the total value of DC power exceeds the operation value. A sixth feature is that the switch unit is switched from the connection mode to the release mode, and one or more changeover switch units on the power storage device side are switched from the release mode to the connection mode.
　本発明に係る直流電力の切替制御装置は、
　パワーコンディショナー側の一または複数の切替スイッチ部を接続モードから開放モードに切り替えると共に、蓄電装置側の一または複数の切替スイッチ部を開放モードから接続モードに切り替えた後、
　直流電力の合計値が再び作動値を上回るとき、前記制御部が、パワーコンディショナー側の残りの切替スイッチ部のうち、一または複数の切替スイッチ部を接続モードから開放モードに切り替えると共に、蓄電装置側の残りの切替スイッチ部のうち、一または複数の切替スイッチ部を開放モードから接続モードに切り替えることを第７の特徴とする。 A DC power switching control device according to the present invention includes:
After switching one or more changeover switch parts on the power conditioner side from the connection mode to the open mode, and after switching one or more changeover switch parts on the power storage device side from the open mode to the connection mode,
When the total value of DC power again exceeds the operating value, the control unit switches one or more changeover switch units from the connection mode to the open mode among the remaining changeover switch units on the power conditioner side, and A seventh feature is that one or a plurality of changeover switch portions among the remaining changeover switch portions are switched from the open mode to the connection mode.
　本発明に係る直流電力の切替制御装置は、
　直流電力の合計値が作動値を上回る毎に、予め設定された順序に従って、パワーコンディショナー側の切替スイッチを接続モードから開放モードに順次切り替えると共に蓄電装置側の切替スイッチを開放モードから接続モードに順次切り替えることを第８の特徴とする。 A DC power switching control device according to the present invention includes:
Each time the total value of DC power exceeds the operating value, the switch on the power conditioner side is sequentially switched from the connection mode to the open mode in accordance with a preset order, and the switch on the power storage device side is sequentially switched from the open mode to the connection mode. Switching is an eighth feature.
　本発明に係る直流電力の切替制御装置は、
　前記作動値は上作動値として設定され、当該上作動値とは別に下作動値を設定し、直流電力の合計値が下作動値を下回るとき、制御部が、パワーコンディショナー側の開放モードに切り替わった切替スイッチ部を接続モードに順次切り替えると共に蓄電装置側の接続モードに切り替わった切替スイッチ部を開放モードに順次切り替えることを第９の特徴とする。 A DC power switching control device according to the present invention includes:
The operating value is set as an upper operating value, a lower operating value is set separately from the upper operating value, and when the total value of DC power falls below the lower operating value, the control unit switches to the open mode on the power conditioner side. A ninth feature is that the changeover switch unit sequentially switched to the connection mode and the changeover switch unit switched to the connection mode on the power storage device side are sequentially switched to the open mode.
　本発明に係る直流電力の切替制御装置は、
　各送電線の途中に発電ユニット毎に電流センサと電圧センサを設けずに、各送電線の途中に送電線毎に設けた切替スイッチ部の下流で合流し、パワーコンディショナーに向かう送電線の途中に、一組の電流センサと電圧センサを設けることを第１０の特徴とする。 A DC power switching control device according to the present invention includes:
Instead of providing a current sensor and voltage sensor for each power generation unit in the middle of each transmission line, they merge downstream of the selector switch provided for each transmission line in the middle of each transmission line, and in the middle of the transmission line toward the power conditioner The tenth feature is that a pair of current sensor and voltage sensor is provided.
　本発明に係る発電システムは、
　複数の発電ユニットを備える発電装置と、発電ユニット毎に発電される直流電力を送電する複数の送電線と、各送電線から送電される直流電力を分岐して蓄電する蓄電装置を備える発電システムであって、前記第６から第１０の特徴のいずれか一の切替制御装置を備えることを特徴とする。 The power generation system according to the present invention includes:
A power generation system including a power generation device including a plurality of power generation units, a plurality of power transmission lines that transmit DC power generated for each power generation unit, and a power storage device that branches and stores the DC power transmitted from each power transmission line A switching control device according to any one of the sixth to tenth features is provided.
　以上説明したように、本発明によると、パワーコンディショナーの規定容量を超えることなく、同規定容量に近い高いレベルの直流電力を安定してパワーコンディショナーに送電することができるようになり、もってパワーコンディショナーの出力電力を高めて、家庭や事業所の負荷や商用系統に対する電力供給を高めることができるという効果を奏する。 As described above, according to the present invention, high-level DC power close to the specified capacity can be stably transmitted to the power conditioner without exceeding the specified capacity of the power conditioner. It is possible to increase the output power of the power supply and increase the power supply to the load of the home or office and the commercial system.
　また、本発明によると、発電装置で発電した直流電力を発電ユニット毎に細かく切替制御して、パワーコンディショナーと蓄電装置に分岐して送電できるようにしたから発電装置で発電した直流電力を無駄なく利用することができるという効果を奏する。 In addition, according to the present invention, the DC power generated by the power generator is finely controlled for each power generation unit so that the power can be branched and transmitted to the power conditioner and the power storage device. There is an effect that it can be used.
　さらに、本発明によると、太陽光パネルやその他の発電装置の設置数や規模に関わらず、発電システムからの電力の出力量をコントロールできるので、国や電力会社に申請した発電量の上限を超えることなく、上限以下の安定した発電電力をパワーコンディショナーに対し送電できるという効果を奏する。 Furthermore, according to the present invention, the output amount of power from the power generation system can be controlled regardless of the number and scale of solar panels and other power generation devices installed, so the power generation amount applied for by the country or power company is exceeded. Without the above, stable power generated below the upper limit can be transmitted to the power conditioner.
本発明の第１実施形態を示すもので、直流電力の切替制御装置を含む発電システムの構成図、The 1st Embodiment of this invention is shown, The block diagram of the electric power generation system containing the switching control apparatus of direct-current power, 図１に示す切替制御装置における直流電力切替部の構成図、The block diagram of the direct-current power switching part in the switching control apparatus shown in FIG. 操作パネルを示す説明図、Explanatory drawing showing the operation panel, 切替制御装置の作用を説明するための図、The figure for demonstrating the effect | action of a switching control apparatus, 本発明の第２実施形態を示すもので、直流電力の切替制御装置を含む蓄電システム兼用の発電システムの構成図、The 2nd Embodiment of this invention is shown, The block diagram of the electric power generation system combined with the electrical storage system containing the switching control apparatus of direct-current power, 図５に示す切替制御装置における直流電力切替部の構成図、The block diagram of the direct-current power switching part in the switching control apparatus shown in FIG. 本発明の第３実施形態を示すもので、直流電力の切替制御装置の構成図である。The 3rd Embodiment of this invention is shown and it is a block diagram of the switching control apparatus of DC electric power.
　以下、本発明を実施するための最良の形態について図面を参照しながら説明する。 Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.
　図１ないし図４は本発明の第１実施形態を示すもので、図１中、符号Ｓ１は発電システムを示している。 1 to 4 show a first embodiment of the present invention. In FIG. 1, reference numeral S1 denotes a power generation system.
　発電システムＳ１は、複数の発電装置（太陽電池アレイ）１００Ａ～１００Ｃと、直流電力の切替制御装置２００を備えており、各発電装置１００Ａ～１００Ｃで発電される直流電力をパワーコンディショナー３００に送電するようになっている。 The power generation system S1 includes a plurality of power generation devices (solar cell arrays) 100A to 100C and a DC power switching control device 200, and transmits DC power generated by each of the power generation devices 100A to 100C to the power conditioner 300. It is like that.
　発電装置１００Ａは既設の太陽電池アレイで、発電装置１００Ｂ、１００Ｃは増設の太陽電池アレイを示している。各発電装置１００Ａ～１００Ｃは複数の太陽電池パネル（モジュール）を直列に接続してなる発電ユニット（ストリング）を複数備えている。図示例の場合、既設の発電装置１００Ａは２列の発電ユニット１１０Ａ１、１１０Ａ２、増設の発電装置１００Ｂは２列の発電ユニット１１０Ｂ１、１１０Ｂ２、増設の発電装置１００Ｃは２列の発電ユニット１１０Ｃ１、１１０Ｃ２を備えている。そして、本発電システムＳ１は、発電装置１００Ａ～１００Ｃの合計発電電力、すなわち各発電ユニット１１０Ａ１～１１０Ｃ２の最大発電電力の合計値がパワーコンディショナー３００の規定容量を上回るように設定されている。 The power generation device 100A is an existing solar cell array, and the power generation devices 100B and 100C indicate additional solar cell arrays. Each of the power generation devices 100A to 100C includes a plurality of power generation units (strings) formed by connecting a plurality of solar cell panels (modules) in series. In the illustrated example, the existing power generation device 100A has two rows of power generation units 110A1 and 110A2, the additional power generation device 100B has two rows of power generation units 110B1 and 110B2, and the additional power generation device 100C has two rows of power generation units 110C1 and 110C2. I have. The power generation system S1 is set such that the total generated power of the power generation apparatuses 100A to 100C, that is, the total value of the maximum generated power of the power generation units 110A1 to 110C2 exceeds the specified capacity of the power conditioner 300.
　既設の発電装置１００Ａは２列の発電ユニット１１０Ａ１、１１０Ａ２からそれぞれ送電線１２１が接続箱１３０を経由してまたは直接、切替制御装置２００に延びている。増設の発電装置１００Ｂは２列の発電ユニット１１０Ｂ１、１１０Ｂ２からそれぞれ送電線１２１が切替制御装置２００に延びている。増設の発電装置１００Ｃは２列の発電ユニット１１０Ｃ１、１１０Ｃ２からそれぞれ送電線１２１が切替制御装置２００に延びている。また、各発電ユニット１１０Ａ１～１１０Ｃ２の各送電線１２１は切替制御装置２００から接続箱１３０を経由または経由せずに１本の送電線１２２に合流し、パワーコンディショナー３００に延びている。 In the existing power generation apparatus 100A, the power transmission lines 121 extend from the power generation units 110A1 and 110A2 in two rows to the switching control apparatus 200 via the connection box 130 or directly. In the additional power generation device 100B, power transmission lines 121 extend from the power generation units 110B1 and 110B2 in two rows to the switching control device 200, respectively. In the additional power generation device 100C, power transmission lines 121 extend from the power generation units 110C1 and 110C2 in two rows to the switching control device 200, respectively. In addition, each power transmission line 121 of each power generation unit 110A1 to 110C2 merges into one power transmission line 122 from the switching control device 200 via the connection box 130 or not, and extends to the power conditioner 300.
　直流電力の切替制御装置２００（以下、切替制御装置２００という）は、発電装置１００Ａ～１００Ｃの発電ユニット１１０Ａ１～１１０Ｃ２毎に発電された直流電力の送電を上下の作動値に基づき切替制御するもので、直流電力切替部２１０と制御部２２０と操作パネル２３０を備えている。また、切替制御装置２００は、インターネットに接続された図示しないサーバーや通信回線１３１を介して通信端末２４０と通信可能な通信部２５０を搭載しており、制御部２２０からの制御信号により、通信部２５０からインターネットを経由してサーバーに発電状況（電流値、電圧値）や切替状況をアップロードし、また、情報端末２４０に操作パネル２３０と同一の機能を搭載することで、通信端末２４０から遠隔操作し、あるいは前記発電状況や切替状況を通信端末２４０に受信可能である。 The DC power switching control device 200 (hereinafter referred to as the switching control device 200) switches and controls transmission of DC power generated by the power generation units 110A1 to 110C2 of the power generation devices 100A to 100C based on the upper and lower operation values. A DC power switching unit 210, a control unit 220, and an operation panel 230 are provided. The switching control device 200 is equipped with a communication unit 250 that can communicate with a communication terminal 240 via a server (not shown) connected to the Internet or a communication line 131, and the communication unit 250 receives a control signal from the control unit 220. The power generation status (current value, voltage value) and the switching status are uploaded from the server 250 to the server via the Internet, and the information terminal 240 is equipped with the same function as the operation panel 230, so that it can be remotely operated from the communication terminal 240. Alternatively, the power generation status and the switching status can be received by the communication terminal 240.
　直流電力切替部２１０は、図２に示すように、各発電ユニット１１０Ａ１～１１０Ｃ２に対応して、各送電線１２１の途中に、各送電線１２１を送られる直流電力の電流値を測定する電流センサ２１１と、直流電力の電圧値を測定する電圧センサ２１２と、切替スイッチ部２１３Ａ１、２１３Ａ２、２１３Ｂ１、２１３Ｂ２、２１３Ｃ１、２１３Ｃ２が設けられている。切替スイッチ部２１３Ａ１～２１３Ｃ２は、制御部２２０からの上下の作動値に基づく制御信号により、各発電ユニット１１０Ａ１～１１０Ｃ２毎に、各送電線１２１を、接続モードと開放モード（非接続モード）のいずれかに切り替えるようになっている。切替スイッチ部２１３Ａ１～２１３Ｃ２には切替スイッチ素子（パワーＭＯＳ－ＦＥＴ、ＩＧＢＴなど）を適用できる。 As shown in FIG. 2, the DC power switching unit 210 corresponds to each of the power generation units 110A1 to 110C2, and measures the current value of the DC power sent through each power transmission line 121 in the middle of each power transmission line 121. 211, a voltage sensor 212 for measuring the voltage value of DC power, and changeover switch sections 213A1, 213A2, 213B1, 213B2, 213C1, and 213C2. The changeover switch sections 213A1 to 213C2 connect each power transmission line 121 to either the connected mode or the open mode (non-connected mode) for each of the power generation units 110A1 to 110C2 by a control signal based on the upper and lower operation values from the control section 220. It is supposed to switch to. A changeover switch element (power MOS-FET, IGBT, etc.) can be applied to the changeover switch sections 213A1 to 213C2.
　制御部２２０は、各発電ユニット１１０Ａ１～１１０Ｃ２毎に、電流センサ２１１によって検出された電流値（Ａ）および電圧センサ２１２によって検出された電圧値（Ｖ）から算出される直流電力（Ｗ）の合計値と上下の作動値を比較し、直流電力の合計値が上作動値を上回るときは、予め設定された順序に従い、各切替スイッチ部２１３Ａ１～２１３Ｃ２を接続モードから開放モードに順次切り替え、直流電力の合計値が下作動部を下回るときは、開放モードに切り替わった切替スイッチ部を接続モードに順次切り替えて戻すようになっている。上下の作動値は、パワーコンディショナー３００の規定容量に基づいて設定するようになっている。 The control unit 220 adds the DC power (W) calculated from the current value (A) detected by the current sensor 211 and the voltage value (V) detected by the voltage sensor 212 for each of the power generation units 110A1 to 110C2. When the total value of DC power exceeds the upper operating value, the changeover switch sections 213A1 to 213C2 are sequentially switched from the connection mode to the open mode according to a preset order, and the DC power When the total value falls below the lower operating part, the changeover switch part switched to the open mode is sequentially switched back to the connection mode. The upper and lower operation values are set based on the prescribed capacity of the power conditioner 300.
　図３は制御部２２０の操作パネル２３０を示している。操作パネル２３０は計測表示部２３１と作動条件設定部２３２が設けられている。計測表示部２３１は発電装置１００Ａの発電ユニット１１０Ａ１、１１０Ａ２毎、発電装置１１０Ｂの発電ユニット１１０Ｂ１、１１０Ｂ２毎、発電装置１００Ｃの発電ユニット１１０Ｃ１、１１０Ｃ２毎に、直流電力の電流値（Ａ）と電圧値（Ｖ）と直流電力（Ｗ）、直流電力の合計値を表示し、また、図示しないが切替スイッチ部２１３Ａ１～２１３Ｃ２の切替状況を表示させることもできる。作動条件設定部２５２は、切替スイッチ部２１３Ａ１～２１３Ｃ２を作動させる上下の作動値と、切替スイッチ部２１３Ａ１～２１３Ｃ２の作動時間（設定時間が経過するまでは元のモードに復帰しない）、切替スイッチ部２１３Ａ１～２１３Ｃ２の作動順序（切替順序）をそれぞれ設定することができる。 FIG. 3 shows the operation panel 230 of the control unit 220. The operation panel 230 is provided with a measurement display unit 231 and an operation condition setting unit 232. The measurement display unit 231 includes a current value (A) and a voltage value of DC power for each of the power generation units 110A1 and 110A2 of the power generation device 100A, for each of the power generation units 110B1 and 110B2 of the power generation device 110B, and for each of the power generation units 110C1 and 110C2 of the power generation device 100C. The total value of (V), DC power (W), and DC power can be displayed, and although not shown, the switching status of the selector switches 213A1 to 213C2 can be displayed. The operation condition setting unit 252 includes upper and lower operation values for operating the changeover switch units 213A1 to 213C2, an operation time of the changeover switch units 213A1 to 213C2 (does not return to the original mode until the set time elapses), a changeover switch unit The operation order (switching order) of 213A1 to 213C2 can be set respectively.
　例えば、作動条件として、パワーコンディショナー３００の規定容量（例えば５．５ｋｗ）に基づき、規定容量よりも１％～５％低い値（＝直流電力の合計値）を上作動値に、規定容量よりも５％～１０％低い値（＝直流電力の合計値）を下作動値にそれぞれ設定し、作動時間は例えば１秒から１０秒の間で設定することができる。また、作動順序として、日射量の測定データに基づき、一日の日射量の多い順番から作動させるように設定することもできる。各発電ユニットの設置場所（南向き、東向き、西向き）や樹木の生育状況によって、各発電ユニット毎に日射量が異なる場合があることから、作動順序を設定することは重要である。 For example, as an operating condition, based on a specified capacity (for example, 5.5 kw) of the power conditioner 300, a value 1% to 5% lower than the specified capacity (= total value of DC power) is set to an upper operating value, and the specified capacity is exceeded. A value lower by 5% to 10% (= total value of DC power) is set as the lower operating value, and the operating time can be set between 1 second and 10 seconds, for example. Moreover, it can also set as an operation | movement order so that it may operate | move from the order with the largest solar radiation amount of the day based on the measurement data of solar radiation amount. It is important to set the operation order because the amount of solar radiation may be different for each power generation unit depending on the installation location (southward, eastward, westward) of each power generation unit and the growth situation of trees.
　操作パネル２３０の計測表示部２３１と作動条件設定部２３２は、情報端末２４０の表示画面に表示させることができ、情報端末２４０から、制御部２２０に対し遠隔操作することにより、発電ユニット１１０Ａ１～１１０Ｃ２毎に、直流電力の電流値（Ａ）と電圧値（Ｖ）と直流電力（Ｗ）、直流電力の合計値を情報端末２４０に表示させ、また、発電ユニット１１０Ａ１～１１０Ｃ２の切替順序、切替状況などを遠隔監視することができる。そして、発電ユニット１１０Ａ１～１１０Ｃ２毎に、切替スイッチ部２１３Ａ１～２１３Ｃ２の上下の作動値と、作動時間、切替スイッチ部の作動順序（切替順序）をそれぞれ設定することができる。 The measurement display unit 231 and the operating condition setting unit 232 of the operation panel 230 can be displayed on the display screen of the information terminal 240. By remotely operating the control unit 220 from the information terminal 240, the power generation units 110A1 to 110C2 Each time, the current value (A), voltage value (V), DC power (W), and total value of DC power of the DC power are displayed on the information terminal 240, and the switching order and switching status of the power generation units 110A1 to 110C2 are displayed. Can be monitored remotely. For each of the power generation units 110A1 to 110C2, the upper and lower operation values of the changeover switch portions 213A1 to 213C2, the operation time, and the operation order (switching order) of the changeover switch portions can be set.
　パワーコンディショナー３００は、送電線１２２から入力される直流電力を交流電力に変換するもので、パワーコンディショナー３００で変換された交流電力は、送電線１２３と分電盤４００を経由して家庭内や事業所内の負荷（電灯、空調機、機器等）５００に送電される。また、余剰電力がある場合等、分電盤４００から送電線１２４を経由して電力会社に送電することができる。パワーコンディショナー３００と制御部２２０との間は通信回線１３２により信号を送受信可能とされ、制御部２２０が、サーバーに格納された電力会社の出力スケジュールデータを、通信部２５０を経由して取り込み、パワーコンディショナー３００に対し、出力指令（出力抑制、出力増加）信号を送信することができる。 The power conditioner 300 converts DC power input from the power transmission line 122 into AC power. The AC power converted by the power conditioner 300 is transmitted to the home or business via the power transmission line 123 and the distribution board 400. Power is transmitted to a load (electric light, air conditioner, equipment, etc.) 500 in the station. Further, when there is surplus power, power can be transmitted from the distribution board 400 to the power company via the power transmission line 124. Signals can be transmitted and received between the power conditioner 300 and the control unit 220 through the communication line 132. The control unit 220 takes in the output schedule data of the power company stored in the server via the communication unit 250, and power An output command (output suppression, output increase) signal can be transmitted to the conditioner 300.
　パワーコンディショナー３００から分電盤４００に向かう送電線１２３の途中にはセンサ（電流、電圧）２１４が設けられ、パワーコンディショナー３００から出力される交流電力値をセンサ２１４で検出し、通信回線１３３を経由して制御部２２０に送信し、交流電力の出力値を操作パネル２３０や情報端末２４０に表示させることができる。情報端末２４０にパワーコンディショナー３００から出力される交流電力値を表示させることにより、パワーコンディショナー３００を遠隔監視することができる。また、切替制御装置２００からパワーコンディショナー３００に向かう送電線１２２の途中に分岐部１２５を設けて、パワーコンディショナー３００に向かう直流電力の一部または全部を直流電力用の負荷５５０に分岐して送電するようにしてもよい。 A sensor (current, voltage) 214 is provided in the middle of the power transmission line 123 from the power conditioner 300 to the distribution board 400, and the AC power value output from the power conditioner 300 is detected by the sensor 214 and passes through the communication line 133. Then, it is transmitted to the control unit 220, and the output value of the AC power can be displayed on the operation panel 230 or the information terminal 240. By displaying the AC power value output from the power conditioner 300 on the information terminal 240, the power conditioner 300 can be remotely monitored. Further, a branching portion 125 is provided in the middle of the power transmission line 122 from the switching control device 200 to the power conditioner 300, and a part or all of the direct current power directed to the power conditioner 300 is branched to the direct current load 550 for transmission. You may do it.
　次に、以上のように構成された発電システムＳ１において、切替制御装置２００の作用について、図２ないし図４などを参照しつつ説明する。 Next, the operation of the switching control device 200 in the power generation system S1 configured as described above will be described with reference to FIGS.
　日の出と共に太陽光の照射量が次第に増大し、一定の閾値を超えると、発電装置１００Ａの発電ユニット１１０Ａ１、１１０Ａ２、発電装置１００Ｂの発電ユニット１１０Ｂ１、１１０Ｂ２、発電装置１００Ｃの発電ユニット１１０Ｃ１、１１０Ｃ２から、直流電力が各送電線１２１を経由して切替制御装置２００に送電される。切替制御装置２００内部では各発電ユニット毎に、直流電力の電流値と電圧値が電流センサ２１１と電圧センサ２１２により計測され、計測された電流値と電圧値から制御部２２０が直流電力を算出し、さらに発電ユニット毎に、直流電力を合計する。計測された電流値と電圧値、算出された直流電力とその合計値は、図３に示す操作パネル２３０の計測表示部２３１上に表示される。また、情報端末２４０に表示させて遠隔監視することもできる。 When the irradiation amount of sunlight gradually increases with sunrise and exceeds a certain threshold value, from the power generation units 110A1 and 110A2 of the power generation device 100A, the power generation units 110B1 and 110B2 of the power generation device 100B, and the power generation units 110C1 and 110C2 of the power generation device 100C, DC power is transmitted to the switching control device 200 via each power transmission line 121. In the switching control device 200, the current value and voltage value of DC power are measured by the current sensor 211 and voltage sensor 212 for each power generation unit, and the control unit 220 calculates DC power from the measured current value and voltage value. Further, the DC power is summed for each power generation unit. The measured current value and voltage value, the calculated DC power and the total value thereof are displayed on the measurement display unit 231 of the operation panel 230 shown in FIG. It can also be displayed on the information terminal 240 for remote monitoring.
　そして、時間と共に太陽光の照射量が増大して図４に示すように直流電力の合計値が上作動値を上回ると、制御部２２０が１番目の切替スイッチ部２１３Ａ１に対し作動信号を送り、１番目の切替スイッチ部２１３Ａ１が接続モードから開放モードに切り替わる。これにより、１番目の発電ユニット１１０Ａ１からの直流電力がパワーコンディショナー３００に送電されないので、直流電力の合計値が上作動値以下に低下する。 And when the irradiation amount of sunlight increases with time and the total value of DC power exceeds the upper operation value as shown in FIG. 4, the control unit 220 sends an operation signal to the first changeover switch unit 213A1, The first changeover switch unit 213A1 switches from the connection mode to the release mode. As a result, since the DC power from the first power generation unit 110A1 is not transmitted to the power conditioner 300, the total value of the DC power is reduced below the upper operating value.
　時間と共に太陽光の照射量がさらに増大して図４に示すように直流電力の合計値が上作動値を再び上回ると、制御部２２０が２番目の切替スイッチ部２１３Ａ２に対し作動信号を送り、２番目の切替スイッチ部２１３Ａ２が接続モードから開放モードに切り替わる。これにより、１番目の発電ユニット１１０Ａ１と２番目の発電ユニット１１０Ａ２からの直流電力がパワーコンディショナー３００に送電されないので、直流電力の合計値が再び上作動値以下に低下する。 When the irradiation amount of sunlight further increases with time and the total value of DC power again exceeds the upper operation value as shown in FIG. 4, the control unit 220 sends an operation signal to the second changeover switch unit 213A2, The second changeover switch unit 213A2 switches from the connection mode to the release mode. As a result, since the DC power from the first power generation unit 110A1 and the second power generation unit 110A2 is not transmitted to the power conditioner 300, the total value of the DC power again decreases below the upper operating value.
　さらに、時間と共に太陽光の照射量がさらに増大して（例えばピーク時に）図４に示すように直流電力の合計値が上作動値を再び上回ると、制御部２２０が３番目の切替スイッチ部２１３Ｂ１に対し作動信号を送り、３番目の切替スイッチ部２１３Ｂ１が接続モードから開放モードに切り替わる。これにより、１番目から３番目にかけて発電ユニットからの直流電力がパワーコンディショナー３００に送電されないので、直流電力の合計値が再び上作動値以下に低下する。 Furthermore, when the amount of sunlight irradiated further increases with time (for example, at a peak) and the total value of DC power again exceeds the upper operating value as shown in FIG. 4, the control unit 220 causes the third changeover switch unit 213B1. The third changeover switch 213B1 is switched from the connection mode to the release mode. As a result, since the DC power from the power generation unit is not transmitted to the power conditioner 300 from the first to the third, the total value of the DC power is again reduced to the upper operating value or less.
　このように太陽光の照射量の増大とともに直流電力の合計値が上作動値を上回る毎に１番目から複数番目の切替スイッチ部を順に作動させて接続モードから開放モードに切り替えることで、パワーコンディショナー３００に送電する直流電力を規定容量以下の高い値に維持することができ、太陽光の照射量の変化や変動に影響されることなく、パワーコンディショナー３００からの出力電力を高い値に維持することができる。 In this way, every time the total value of DC power exceeds the upper operating value as the amount of sunlight radiates, the first to multiple switching switches are operated in order to switch from the connected mode to the open mode, thereby enabling the power conditioner. DC power transmitted to 300 can be maintained at a high value below a specified capacity, and output power from the power conditioner 300 can be maintained at a high value without being affected by changes or fluctuations in the amount of sunlight irradiated. Can do.
　太陽光の照射量がピークを超えて次第に減少すると直流電力の合計値が減少し、下作動値を下回るようになる。図４に示すように直流電力の合計値が下作動値を下回ると、制御部２２０が１番目の切替スイッチ部２１３Ａ１に対し作動信号を送り、１番目の切替スイッチ部２１３Ａ１が開放モードから接続モードに切り替わる。これにより、１番目の発電ユニット１１０Ａからの発電電力がパワーコンディショナー３００に再び送電されるので、図４に示すように直流電力の合計値が下作動値以上に上昇する。 す る と When the amount of sunlight irradiated gradually decreases beyond the peak, the total value of DC power decreases and falls below the lower operating value. As shown in FIG. 4, when the total value of DC power falls below the lower operating value, the control unit 220 sends an operating signal to the first changeover switch unit 213A1, and the first changeover switch unit 213A1 changes from the open mode to the connection mode. Switch to As a result, the generated power from the first power generation unit 110A is transmitted again to the power conditioner 300, so that the total value of the DC power rises above the lower operating value as shown in FIG.
　時間と共に太陽光の照射量がさらに減少して直流電力の合計値が下作動値を再び下回ると、制御部２２０が２番目の切替スイッチ部２１３Ａ２に対し作動信号を送り、２番目の切替スイッチ部２１３Ａ２が開放モードから接続モードに切り替わる。これにより、１番目の発電ユニット１１０Ａ１と２番目の発電ユニット１１０Ａ２からの直流電力がパワーコンディショナー３００に再び送電されるので、直流電力の合計値が再び下作動値以上に上昇する。 When the irradiation amount of sunlight further decreases with time and the total value of DC power falls below the lower operation value again, the control unit 220 sends an operation signal to the second changeover switch unit 213A2, and the second changeover switch unit. 213A2 switches from the open mode to the connected mode. As a result, the DC power from the first power generation unit 110A1 and the second power generation unit 110A2 is transmitted again to the power conditioner 300, so that the total value of the DC power again rises above the lower operating value.
　さらに、時間と共に太陽光の照射量がさらに減少して直流電力の合計値が下作動値を再び下回ると、制御部２２０が３番目の切替スイッチ部２１３Ｂ１に対し作動信号を送り、３番目の切替スイッチ部２１３Ｂ１が開放モードから接続モードに切り替わる。これにより、１番目から３番目にかけて発電ユニットからの直流電力がパワーコンディショナー３００に再び送電され、直流電力の合計値が再び下作動値以上に上昇する。 Further, when the amount of sunlight irradiated further decreases with time and the total value of DC power falls below the lower operating value again, the control unit 220 sends an operating signal to the third changeover switch unit 213B1, and the third switching is performed. The switch unit 213B1 switches from the open mode to the connection mode. As a result, the DC power from the power generation unit is transmitted again to the power conditioner 300 from the first to the third, and the total value of the DC power again rises above the lower operating value.
　このように太陽光の照射量の減少とともに直流電力の合計値が下作動値を下回る毎に１番目から複数番目の切替スイッチ部を順に作動させて開放モードから接続モードに切り替えることで、パワーコンディショナー３００に送電する直流電力を下作動値以上の規定容量に近い値に維持することができ、太陽光の照射量の変化や変動に影響されることなく、パワーコンディショナー３００の出力電力を日中高い値に維持することができる。 In this way, each time the total value of DC power falls below the lower operating value as the amount of sunlight irradiates, the first to plural switching switches are operated in order to switch from the open mode to the connected mode, thereby enabling the power conditioner. The DC power transmitted to 300 can be maintained at a value close to the specified capacity above the lower operating value, and the output power of the power conditioner 300 is high during the day without being affected by changes or fluctuations in the amount of sunlight. Value can be maintained.
　図５および図６は本発明の第２実施形態を示すもので、図５中、符号Ｓ２は蓄電システムを兼用した発電システム、符号６００は蓄電装置を示している。なお、図１に示す構成と同一の構成には同一符号を付してその説明は省略する。 5 and 6 show a second embodiment of the present invention. In FIG. 5, symbol S2 indicates a power generation system that also serves as a power storage system, and symbol 600 indicates a power storage device. In addition, the same code | symbol is attached | subjected to the structure same as the structure shown in FIG. 1, and the description is abbreviate | omitted.
　発電システムＳ２は、複数の発電装置（太陽電池アレイ）１００Ａ～１００Ｃと、切替制御装置２００’と、蓄電装置６００を備えており、各発電装置１００Ａ～１００Ｃで発電される直流電力をパワーコンディショナー３００に送電し、また、各発電装置１００Ａ～１００Ｃで発電される直流電力の一部または全部を蓄電装置６００に分岐して送電し、蓄電するようになっている。 The power generation system S2 includes a plurality of power generation devices (solar cell arrays) 100A to 100C, a switching control device 200 ′, and a power storage device 600, and direct current power generated by each of the power generation devices 100A to 100C is converted into a power conditioner 300. In addition, a part or all of the DC power generated by each of the power generation devices 100A to 100C is branched to the power storage device 600 to be transmitted and stored.
　前述したように、発電装置１００Ａは既設の太陽電池アレイで、発電装置１００Ｂ、１００Ｃは増設の太陽電池アレイを示している。各発電装置１００Ａ～１００Ｃは複数の太陽電池パネルを直列に接続してなる発電ユニット（ストリング）を複数備えている。本発電システムＳ２は、発電装置１００Ａ～１００Ｃの合計発電電力、すなわち各発電ユニットの最大発電電力の合計値がパワーコンディショナー３００の規定容量を上回るように設定されている。 As described above, the power generation device 100A is an existing solar cell array, and the power generation devices 100B and 100C indicate additional solar cell arrays. Each of the power generation devices 100A to 100C includes a plurality of power generation units (strings) formed by connecting a plurality of solar battery panels in series. The power generation system S2 is set so that the total generated power of the power generation apparatuses 100A to 100C, that is, the total value of the maximum generated power of each power generation unit exceeds the specified capacity of the power conditioner 300.
　図５に示すように、発電装置１００Ａの各発電ユニット１１０Ａ１、１１０Ａ２からは、接続箱１３０を経由してまたは直接、それぞれ送電線１２１が、切替制御装置２００’の直流電力切替部２１０’に延びている。発電装置１００Ｂの各発電ユニット１１０Ｂ１、１１０Ｂ２からは、それぞれ送電線１２１が、切替制御装置２００’の直流電力切替部２１０’に延びている。発電装置１００Ｃの各発電ユニット１１０Ｃ１、１１０Ｃ２からは、それぞれ送電線１２１が、切替制御装置２００’の直流電力切替部２１０’に延びている。各発電ユニット１１０Ａ１～１１０Ｃ２の送電線１２１は、切替制御装置２００’の直流電力切替部２１０’から接続箱１３０に延びて１本の送電線１２２に合流し、パワーコンディショナー３００に延びている。また、各発電ユニット１１０Ａ１～１１０Ｃ２の送電線１２１は、それぞれの分岐部１２５（図６参照）から蓄電装置６００向けに分岐し、分岐した各送電線１２６は１本の送電線１２７に合流し、蓄電装置６００に延びている。蓄電装置６００からは送電線１２８がパワーコンディショナー３００に向けて延び、前述の１本の送電線１２２に合流している。 As shown in FIG. 5, the power transmission lines 121 extend from the power generation units 110A1 and 110A2 of the power generation device 100A to the DC power switching unit 210 ′ of the switching control device 200 ′ via the connection box 130 or directly. ing. A power transmission line 121 extends from each power generation unit 110B1 and 110B2 of the power generation device 100B to the DC power switching unit 210 'of the switching control device 200'. From each of the power generation units 110C1 and 110C2 of the power generation apparatus 100C, a power transmission line 121 extends to the DC power switching unit 210 'of the switching control apparatus 200'. The power transmission lines 121 of the power generation units 110A1 to 110C2 extend from the DC power switching unit 210 'of the switching control device 200' to the connection box 130, merge into one power transmission line 122, and extend to the power conditioner 300. In addition, the power transmission lines 121 of the power generation units 110A1 to 110C2 branch from the respective branch portions 125 (see FIG. 6) toward the power storage device 600, and the branched power transmission lines 126 merge into one power transmission line 127, The power storage device 600 extends. A power transmission line 128 extends from the power storage device 600 toward the power conditioner 300 and joins the one power transmission line 122 described above.
　切替制御装置２００’は、発電装置１００Ａ～１００Ｃの発電ユニット１１０Ａ１～１１０Ｃ２毎に発電された直流電力の送電を上下の作動値に基づき切替制御するもので、図６に示すように、直流電力切替部２１０’の内部で、各発電ユニット１１０Ａ１～Ｃ２に対応して、分岐部１２５から分岐されてパワーコンディショナー３００に向かう送電線１２９の途中に、各送電線１２９を送られる直流電力の電流値を測定する電流センサ２１１と、直流電力の電圧値を測定する電圧センサ２１２と、切替スイッチ部２１３Ａ１、２１３Ａ２、２１３Ｂ１、２１３Ｂ２、２１３Ｃ１、２１３Ｃ２が設けられている。同様に、分岐部１２５から分岐されて蓄電装置６００に向かう送電線１２６の途中に各直流電力の電流値を測定する電流センサ２１１と、各直流電力の電圧値を測定する電圧センサ２１２と、切替スイッチ部２１３Ａ３、２１３Ａ４、２１３Ｂ３、２１３Ｂ４、２１３Ｃ３、２１３Ｃ４が設けられている。 The switching control device 200 ′ switches and controls the transmission of the DC power generated by the power generation units 110A1 to 110C2 of the power generation devices 100A to 100C based on the upper and lower operation values. As shown in FIG. Inside the section 210 ′, the current value of the DC power sent through each power transmission line 129 in the middle of the power transmission line 129 branched from the branching section 125 toward the power conditioner 300 corresponding to each power generation unit 110A1 to C2. A current sensor 211 for measuring, a voltage sensor 212 for measuring the voltage value of DC power, and a changeover switch unit 213A1, 213A2, 213B1, 213B2, 213C1, 213C2 are provided. Similarly, switching is performed between a current sensor 211 that measures the current value of each DC power and a voltage sensor 212 that measures the voltage value of each DC power in the middle of the transmission line 126 branched from the branching unit 125 toward the power storage device 600. Switch portions 213A3, 213A4, 213B3, 213B4, 213C3, and 213C4 are provided.
　切替スイッチ部２１３Ａ３～２１３Ｃ４は、パワーコンディショナー３００側と蓄電装置６００側が協働して、制御部２２０からの上下の作動値に基づく制御信号により、発電ユニット１１０Ａ１～１１０Ｃ２毎の送電線１２６を接続モードと開放モード（非接続モード）のいずれかに切り替えるようになっている。すなわち、制御部２２０からの上下の作動値に基づく制御信号により、各発電ユニット１１０Ａ１～１１０Ｃ３毎に、パワーコンディショナー３００側の切替スイッチ部（例えば切替スイッチ部２１３Ａ１）が接続モードから開放モードに切り替わるとき、蓄電装置６００側の切替スイッチ部（前記例の場合で切替スイッチ部２１３Ａ３）が開放モードから接続モードに切り替わり、蓄電装置６００側の切替スイッチ部（例えば切替スイッチ部２１３Ａ３）が接続モードから開放モードに切り替わるとき、パワーコンディショナー３００側の切替スイッチ部（前記例の場合で切替スイッチ部２１３Ａ１）が開放モードから接続モードに切り替わるようになっている。 The changeover switch sections 213A3 to 213C4 connect the power transmission lines 126 for the power generation units 110A1 to 110C2 in accordance with the control signals based on the upper and lower operating values from the control section 220 in cooperation with the power conditioner 300 side and the power storage device 600 side. And switching to either open mode (disconnected mode). That is, when the changeover switch unit (for example, the changeover switch unit 213A1) on the power conditioner 300 side is switched from the connection mode to the open mode for each of the power generation units 110A1 to 110C3 by the control signal based on the upper and lower operation values from the control unit 220. The changeover switch unit on the power storage device 600 side (the changeover switch unit 213A3 in the above example) switches from the open mode to the connection mode, and the changeover switch unit on the power storage device 600 side (for example, the changeover switch unit 213A3) changes from the connection mode to the open mode. When the mode is switched, the changeover switch unit on the power conditioner 300 side (the changeover switch unit 213A1 in the case of the above example) is switched from the open mode to the connection mode.
　これにより、各直流電力の合計値が上作動値以下であるとき、各直流電力をパワーコンディショナー３００に送電し、各直流電力の合計値が上作動値を上回るとき、上作動値を上回る分の直流電力を蓄電装置６００に送電し、蓄電することができるようになる。 Thereby, when the total value of each DC power is below the upper operating value, each DC power is transmitted to the power conditioner 300, and when the total value of each DC power exceeds the upper operating value, the amount exceeding the upper operating value. DC power can be transmitted to the power storage device 600 and stored.
　制御部２２０は、各発電ユニット１１０Ａ１～Ｂ２毎に、電流センサ２１１によって検出された電流値（Ａ）および電圧センサ２１２によって検出された電圧値（Ｖ）から算出される直流電力（Ｗ）の合計値と上下の作動値を比較し、直流電力の合計値が上作動値を上回るときは、予め設定された順序に従い、パワーコンディショナー３００側の切替スイッチ部２１３Ａ１～２１３Ｃ２を接続モードから開放モードに順次切り替えると共に、蓄電装置６００側の切替スイッチ部２１３Ａ３～２１３Ｃ４を開放モードから接続モードに順次切り替え、直流電力の合計値が下作動部を下回るときは、パワーコンディショナー３００側の開放モードに切り替わった切替スイッチ部を開放モードから接続モードに、蓄電装置６００側の接続モードに切り替わった切替スイッチ部を接続モードから開放モードに、順次切り替えて戻すようになっている。上下の作動値は、パワーコンディショナー３００の規定容量に基づいて設定するようになっている。 The controller 220 adds the DC power (W) calculated from the current value (A) detected by the current sensor 211 and the voltage value (V) detected by the voltage sensor 212 for each power generation unit 110A1 to B2. When the total value of DC power exceeds the upper operating value, the changeover switches 213A1 to 213C2 on the power conditioner 300 side are sequentially switched from the connected mode to the open mode according to a preset order. In addition to switching, the changeover switches 213A3 to 213C4 on the power storage device 600 side are sequentially switched from the open mode to the connection mode, and when the total value of DC power falls below the lower operating unit, the changeover switch switched to the open mode on the power conditioner 300 side From the open mode to the connection mode and from the storage device 600 side to the connection mode Ri in place of the switching unit from a connected mode open mode, so that the back sequentially switched. The upper and lower operation values are set based on the prescribed capacity of the power conditioner 300.
　図５に示す操作パネル２３０は、特に図示しないが、図３に示す操作パネル２３０と基本的に同様の構成である。蓄電装置６００からは通信回線１３４が制御部２２０に延びており、蓄電装置６００の蓄電状況や蓄電装置６００からの給電状況を計測表示部に表示し、あるいは操作パネル２３０や情報端末２４０から、蓄電装置６００に対し給電指令を送信することができる。また、条件設定部において、例えば、パワーコンディショナー３００の規定容量（例えば５．５ｋｗ）に基づき、規定容量よりも１％～５％低い値（＝直流電力の合計値）を上作動値に、規定容量よりも５％～１０％低い値（＝直流電力の合計値）を下作動値にそれぞれ設定し、作動時間は例えば１秒から１０秒の間で設定することができる。また、情報端末２４０の機能も前記実施形態と同様に行える。 The operation panel 230 shown in FIG. 5 has basically the same configuration as the operation panel 230 shown in FIG. A communication line 134 extends from the power storage device 600 to the control unit 220, and the power storage status of the power storage device 600 and the power supply status from the power storage device 600 are displayed on the measurement display unit, or the power storage device 600 receives power from the operation panel 230 or the information terminal 240. A power supply command can be transmitted to the device 600. In the condition setting unit, for example, based on a specified capacity (for example, 5.5 kw) of the power conditioner 300, a value 1% to 5% lower than the specified capacity (= total value of DC power) is specified as the upper operating value. A value 5% to 10% lower than the capacity (= total value of DC power) is set as the lower operating value, and the operating time can be set, for example, between 1 second and 10 seconds. Moreover, the function of the information terminal 240 can also be performed similarly to the said embodiment.
　次に、以上のように構成された発電システムＳ２において、切替制御装置２００’の作用について、図を参照しつつ説明する。 Next, the operation of the switching control device 200 'in the power generation system S2 configured as described above will be described with reference to the drawings.
　日の出と共に太陽光の照射量が次第に増大し、一定の閾値を超えると、発電装置１００Ａ～１００Ｃの各発電ユニット１１０Ａ１～１１０Ｃ２から直流電力が各送電線１２１を経由して切替制御装置２００’に送電される。切替制御装置２００’内部では、発電ユニット１１０Ａ１～１１０Ｃ２毎に、直流電力の電流値と電圧値が電流センサ２１１と電圧センサ２１２により計測され、計測された電流値と電圧値から制御部２２０が直流電力を算出し、さらに発電ユニット１１０Ａ１～１１０Ｃ２毎に、直流電力を合計する。計測された電流値と電圧値、算出された直流電力とその合計値は、図５に示す操作パネル２３０の計測表示部上に表示される。 When the irradiation amount of sunlight gradually increases with sunrise and exceeds a certain threshold value, DC power is transmitted from the power generation units 110A1 to 110C2 of the power generation devices 100A to 100C to the switching control device 200 ′ via the power transmission lines 121. Is done. In the switching control device 200 ′, the current value and voltage value of the DC power are measured by the current sensor 211 and the voltage sensor 212 for each of the power generation units 110A1 to 110C2, and the control unit 220 determines the DC power from the measured current value and voltage value. The power is calculated, and the DC power is totaled for each of the power generation units 110A1 to 110C2. The measured current value and voltage value, the calculated DC power and the total value thereof are displayed on the measurement display unit of the operation panel 230 shown in FIG.
　そして、時間と共に太陽光の照射量が増大して直流電力の合計値が上作動値を上回ると、制御部２２０が、パワーコンディショナー３００側の１番目の切替スイッチ部２１３Ａ１と、蓄電装置６００側の１番目の切替スイッチ部２１３Ａ３に対し作動信号を送り、パワーコンディショナー３００側の１番目の切替スイッチ部２１３Ａ１を接続モードから開放モードに、蓄電装置６００側の１番目の切替スイッチ部２１３Ａ３を開放モードから接続モードにそれぞれ切り替える。これにより１番目の発電ユニット１１０Ａ１からの直流電力はパワーコンディショナー３００に送電されず、蓄電装置６００へ送電される。これによってパワーコンディショナー３００に入力する直流電力の合計値が上作動値以下に低下すると共に、直流電力の一部が蓄電装置６００に蓄電される。 And if the irradiation amount of sunlight increases with time and the total value of direct-current power exceeds an upper operation value, the control part 220 will be the 1st changeover switch part 213A1 by the side of the power conditioner 300, and the electrical storage apparatus 600 side. An operation signal is sent to the first changeover switch portion 213A3, the first changeover switch portion 213A1 on the power conditioner 300 side is changed from the connection mode to the release mode, and the first changeover switch portion 213A3 on the power storage device 600 side is changed from the release mode. Switch to connected mode. Thus, the DC power from the first power generation unit 110A1 is not transmitted to the power conditioner 300 but is transmitted to the power storage device 600. As a result, the total value of the DC power input to the power conditioner 300 is reduced below the upper operating value, and a part of the DC power is stored in the power storage device 600.
　時間と共に太陽光の照射量がさらに増大して直流電力の合計値が上作動値を再び上回ると、制御部２２０が、パワーコンディショナー３００側の２番目の切替スイッチ部２１３Ａ２と、蓄電装置６００側の２番目の切替スイッチ部２１３Ａ４に対し作動信号を送り、パワーコンディショナー３００側の２番目の切替スイッチ部２１３Ａ２を接続モードから開放モードに、蓄電装置６００側の２番目の切替スイッチ部２１３Ａ４を開放モードから接続モードにそれぞれ切り替える。これにより２番目の発電ユニット１１０Ａ２からの直流電力はパワーコンディショナー３００に送電されず、蓄電装置６００へ送電される。これによってパワーコンディショナー３００に入力する直流電力の合計値が上作動値以下に低下すると共に、直流電力の一部が蓄電装置６００に蓄電される。 When the irradiation amount of sunlight further increases with time and the total value of DC power exceeds the upper operating value again, the control unit 220 is connected to the second changeover switch unit 213A2 on the power conditioner 300 side and the power storage device 600 side. An operation signal is sent to the second changeover switch portion 213A4, the second changeover switch portion 213A2 on the power conditioner 300 side is changed from the connection mode to the release mode, and the second changeover switch portion 213A4 on the power storage device 600 side is changed from the release mode. Switch to connected mode. Thereby, the DC power from the second power generation unit 110A2 is not transmitted to the power conditioner 300 but is transmitted to the power storage device 600. As a result, the total value of the DC power input to the power conditioner 300 is reduced below the upper operating value, and a part of the DC power is stored in the power storage device 600.
　さらに、時間と共に太陽光の照射量がさらに増大して（例えばピーク時に）直流電力の合計値が上作動値を再び上回ると、制御部２２０が、パワーコンディショナー３００側の３番目の切替スイッチ部２１３Ｂ１と、蓄電装置６００側の３番目の切替スイッチ部２１３Ｂ３に対し作動信号を送り、パワーコンディショナー３００側の３番目の切替スイッチ部２１３Ｂ１を接続モードから開放モードに、蓄電装置６００側の３番目の切替スイッチ部２１３Ｂ３を開放モードから接続モードにそれぞれ切り替える。これにより３番目の発電ユニット１１０Ｂ１からの直流電力はパワーコンディショナー３００に送電されず、蓄電装置６００へ送電される。これによってパワーコンディショナー３００へ入力する直流電力の合計値が上作動値以下に低下すると共に、発電電力の一部が蓄電装置６００に蓄電される。 Further, when the amount of sunlight irradiated further increases with time (for example, at a peak) and the total value of the DC power exceeds the upper operating value again, the control unit 220 causes the third changeover switch unit 213B1 on the power conditioner 300 side. Then, an operation signal is sent to the third changeover switch portion 213B3 on the power storage device 600 side, and the third changeover switch portion 213B1 on the power conditioner 300 side is changed from the connection mode to the release mode, and the third changeover on the power storage device 600 side is performed. The switch unit 213B3 is switched from the open mode to the connection mode. As a result, the DC power from the third power generation unit 110B1 is not transmitted to the power conditioner 300 but is transmitted to the power storage device 600. As a result, the total value of the DC power input to the power conditioner 300 is reduced to the upper operating value or less, and part of the generated power is stored in the power storage device 600.
　このように太陽光の照射量の増大とともに直流電力の合計値が上作動値を上回る毎に、パワーコンディショナー３００側と蓄電装置６００側の１番目から複数番目の切替スイッチ部を順に作動させて、パワーコンディショナー３００側を接続モードから開放モードに、蓄電装置６００側を開放モードから接続モードに切り替えることで、パワーコンディショナー３００に送電する直流電力を規定容量に近い値に維持することができ、太陽光の照射量の変化や変動に影響されることなく、パワーコンディショナー３００の出力電力を日中高い値に維持することができる。あわせて、余剰の生産電力を蓄電装置６００に蓄電し、夜間等に必要に応じてパワーコンディショナー３００を通して負荷５００に給電し、さらに電力会社に売電することができる。 Thus, every time the total value of DC power exceeds the upper operating value as the amount of sunlight irradiated increases, the first to the plurality of changeover switch units on the power conditioner 300 side and the power storage device 600 side are sequentially operated, By switching the power conditioner 300 side from the connected mode to the open mode and switching the power storage device 600 side from the open mode to the connected mode, the direct-current power transmitted to the power conditioner 300 can be maintained at a value close to the specified capacity. The output power of the power conditioner 300 can be maintained at a high value during the day without being affected by changes or fluctuations in the amount of irradiation. In addition, surplus produced power can be stored in the power storage device 600, and can be supplied to the load 500 through the power conditioner 300 as needed at night or the like, and further sold to an electric power company.
　太陽光の照射量がピークを超えて次第に減少すると直流電力の合計値が減少し、下作動値を下回るようになる。直流電力の合計値が下作動値を下回ると、制御部２２０が、パワーコンディショナー３００側の１番目の切替スイッチ部２１３Ａ１と、蓄電装置６００側の１番目の切替スイッチ部２１３Ａ３に対し作動信号を送り、パワーコンディショナー３００側の１番目の切替スイッチ部２１３Ａ１を開放モードから接続モードに、蓄電装置６００側の１番目の切替スイッチ部２１３Ａ３を接続モードから開放モードにそれぞれ切り替える。これにより、１番目の発電ユニット１１０Ａ１からの直流電力がパワーコンディショナー３００に再び送電されるので、直流電力の合計値が下作動値以上に上昇する。 す る と When the amount of sunlight irradiated gradually decreases beyond the peak, the total value of DC power decreases and falls below the lower operating value. When the total value of the DC power falls below the lower operation value, the control unit 220 sends an operation signal to the first changeover switch unit 213A1 on the power conditioner 300 side and the first changeover switch unit 213A3 on the power storage device 600 side. The first changeover switch portion 213A1 on the power conditioner 300 side is switched from the open mode to the connection mode, and the first changeover switch portion 213A3 on the power storage device 600 side is switched from the connection mode to the open mode. As a result, the DC power from the first power generation unit 110A1 is transmitted again to the power conditioner 300, so that the total value of the DC power rises above the lower operating value.
　時間と共に太陽光の照射量がさらに減少して直流電力の合計値が下作動値を再び下回ると、制御部２２０が、パワーコンディショナー３００側の２番目の切替スイッチ部２１３Ａ２と、蓄電装置６００側の２番目の切替スイッチ部２１３Ａ４に対し作動信号を送り、パワーコンディショナー３００側の２番目の切替スイッチ部２１３Ａ２を開放モードから接続モードに、蓄電装置６００側の２番目の切替スイッチ部２１３Ａ４を接続モードから開放モードにそれぞれ切り替える。これにより、２番目の発電ユニット１１０Ａ２からの直流電力がパワーコンディショナー３００に再び送電されるので、直流電力の合計値が下作動値以上に上昇する。 When the irradiation amount of sunlight further decreases with time and the total value of DC power falls below the lower operating value again, the control unit 220 controls the second changeover switch unit 213A2 on the power conditioner 300 side and the power storage device 600 side. An operation signal is sent to the second changeover switch part 213A4, the second changeover switch part 213A2 on the power conditioner 300 side is changed from the open mode to the connection mode, and the second changeover switch part 213A4 on the power storage device 600 side is changed from the connection mode. Switch to open mode respectively. As a result, the DC power from the second power generation unit 110A2 is transmitted again to the power conditioner 300, so that the total value of the DC power rises above the lower operating value.
　さらに、時間と共に太陽光の照射量がさらに減少して直流電力の合計値が下作動値を再び下回ると、制御部２２０が、パワーコンディショナー３００側の３番目の切替スイッチ部２１３Ｂ１と、蓄電装置６００側の３番目の切替スイッチ部２１３Ｂ３に対し作動信号を送り、パワーコンディショナー３００側の３番目の切替スイッチ部２１３Ｂ１を開放モードから接続モードに、蓄電装置６００側の３番目の切替スイッチ部２１３Ｂ３を接続モードから開放モードにそれぞれ切り替える。これにより、３番目の発電ユニット１１０Ｂ１からの直流電力がパワーコンディショナー３００に再び送電されるので、直流電力の合計値が下作動値以上に上昇する。 Further, when the irradiation amount of sunlight further decreases with time and the total value of DC power falls below the lower operating value again, the control unit 220 includes the third changeover switch unit 213B1 on the power conditioner 300 side and the power storage device 600. An operation signal is sent to the third changeover switch portion 213B3 on the side, and the third changeover switch portion 213B1 on the power conditioner 300 side is changed from the open mode to the connection mode, and the third changeover switch portion 213B3 on the power storage device 600 side is connected. Switch from mode to release mode. As a result, the DC power from the third power generation unit 110B1 is transmitted again to the power conditioner 300, so that the total value of the DC power rises above the lower operating value.
　このように太陽光の照射量の減少とともに直流電力の合計値が下作動値を下回る毎にパワーコンディショナー３００側と蓄電装置６００側の１番目から複数番目の切替スイッチ部を順に作動させて、パワーコンディショナー３００側を開放モードから接続モードに、蓄電装置６００側を接続モードから開放モードに切り替えることで、パワーコンディショナー３００に送電する直流電力を規定容量に近い値に維持することができ、太陽光の照射量の変化や変動に影響されることなく、パワーコンディショナー３００の出力電力を日中高い値に維持することができる。また、発電電力が不足する場合は蓄電装置６００からパワーコンディショナー３００に対し給電を行うことができる。 Thus, every time the total value of DC power falls below the lower operating value as the amount of sunlight irradiates, the first to plural changeover switches on the power conditioner 300 side and the power storage device 600 side are operated in order, and the power By switching the conditioner 300 side from the open mode to the connected mode, and switching the power storage device 600 side from the connected mode to the open mode, the direct-current power transmitted to the power conditioner 300 can be maintained at a value close to the specified capacity. The output power of the power conditioner 300 can be maintained at a high value during the day without being affected by changes or fluctuations in the irradiation amount. In addition, when the generated power is insufficient, power can be supplied from the power storage device 600 to the power conditioner 300.
　図７は、本発明の第３実施形態を示すもので、直流電力切替部２１０において、前記実施形態で設けられていた送電線１２１毎の電流センサ２１１と電圧センサ２１２（図２、図６参照）は省かれ、切替スイッチ部２１３Ａ１～２１３Ｃ２の下流で合流し、パワーコンディショナー３００に向かう送電線１２２の途中に、１組の電流センサ２１１’と電圧センサ２１２’が設けられている。電流センサ２１１’と電圧センサ２１２’から検出される電流値と電圧値は制御部２２０に送信され、前記実施形態と同様に、制御部２２０により、電流値と電圧値により算出された直流電力の合計値が上下の作動値と比較され、直流電力の合計値が上作動値を上回るときは、予め設定された順序に従い、各切替スイッチ部２１３Ａ１～２１３Ｃ２を接続モードから開放モードに順次切り替え、直流電力の合計値が下作動部を下回るときは、開放モードに切り替わった切替スイッチ部を接続モードに順次切り替えて戻すようになっている。 FIG. 7 shows a third embodiment of the present invention. In the DC power switching unit 210, a current sensor 211 and a voltage sensor 212 (see FIGS. 2 and 6) for each power transmission line 121 provided in the embodiment. ) Are omitted, and a set of current sensor 211 ′ and voltage sensor 212 ′ are provided in the middle of the transmission line 122 that merges downstream of the changeover switch sections 213 A 1 to 213 C 2 and heads for the power conditioner 300. The current value and the voltage value detected from the current sensor 211 ′ and the voltage sensor 212 ′ are transmitted to the control unit 220, and the DC power calculated by the control unit 220 based on the current value and the voltage value is transmitted by the control unit 220 in the same manner as in the above embodiment. When the total value is compared with the upper and lower operating values, and the total value of the DC power exceeds the upper operating value, the changeover switches 213A1 to 213C2 are sequentially switched from the connection mode to the open mode according to a preset order, When the total value of the electric power is lower than the lower operating part, the changeover switch part switched to the open mode is switched back to the connection mode sequentially.
　また、図５に示す蓄電装置６００がある場合、蓄電装置６００側の切替スイッチ部２１３Ａ３～２１３Ｃ４を開放モードから接続モードに順次切り替え、直流電力の合計値が下作動部を下回るときは、パワーコンディショナー３００側の開放モードに切り替わった切替スイッチ部を開放モードから接続モードに、蓄電装置６００側の接続モードに切り替わった切替スイッチ部を接続モードから開放モードに、順次切り替えて戻すようになっている。 Further, in the case where the power storage device 600 shown in FIG. 5 is provided, when the changeover switches 213A3 to 213C4 on the power storage device 600 side are sequentially switched from the open mode to the connection mode and the total value of DC power falls below the lower operating unit, The changeover switch unit switched to the open mode on the 300 side is switched from the open mode to the connection mode, and the changeover switch unit switched to the connection mode on the power storage device 600 side is sequentially switched back from the connection mode to the open mode.
　図７に示す電流センサ２１１’と電圧センサ２１２’は、図２、図６に示す送電線１２１毎の電流センサ２１１と電圧センサ２１２と組み合わせて、送電線１２２の途中に設けるようにしてもよい。 The current sensor 211 ′ and the voltage sensor 212 ′ illustrated in FIG. 7 may be provided in the middle of the power transmission line 122 in combination with the current sensor 211 and the voltage sensor 212 for each power transmission line 121 illustrated in FIGS. .
　以上の３つの実施形態では、既設の発電装置１００Ａに増設の２つの発電装置１００Ｂ、１００Ｃを組み合わせた例を説明したが、これに限らない。全て既設の発電装置でもよいし、全て新設の発電装置でもよい。また、発電装置は１台であってもよい。さらに発電装置内の発電ユニットは２列に限らず多数例であってもよい。また、送電線１２１～１２９は単線に限らず、複数線でもよい。 In the above three embodiments, the example in which the two additional power generation devices 100B and 100C are combined with the existing power generation device 100A has been described, but the present invention is not limited to this. All of the existing power generators may be used, or all of the new power generators may be used. Moreover, the number of power generation devices may be one. Further, the power generation units in the power generation apparatus are not limited to two rows, and may be a large number of examples. Further, the power transmission lines 121 to 129 are not limited to a single line but may be a plurality of lines.
　本発明の切替制御装置は、発電設備の増設によって発電電力量（Ｗｈ）を増やすが、発電設備の発電電力（Ｗ）が設定上限を超えないように制限する装置であると言える。 It can be said that the switching control device of the present invention increases the amount of generated power (Wh) by increasing the number of power generation facilities, but limits the power generation power (W) of the power generation facilities so as not to exceed the set upper limit.
　本発明の切替制御装置が適用される発電装置は太陽光発電装置に限らない。他の再生エネルギーとして風力、水力、バイオなどの他の発電装置にも適用可能であり、太陽光発電装置と再生エネルギー例えば風力発電装置との組み合わせにも適用可能である。さらに、再生エネルギーだけでなく火力、石炭などの従来の発電装置にも適用可能である。 The power generator to which the switching control device of the present invention is applied is not limited to a solar power generator. Other renewable energy can be applied to other power generation devices such as wind power, hydraulic power, and biotechnology, and can also be applied to a combination of a solar power generation device and a renewable energy such as a wind power generation device. Furthermore, it can be applied not only to renewable energy but also to conventional power generators such as thermal power and coal.
　本発明に係る直流電力の切替制御装置は、発電装置の発電ユニット毎に発電された直流電力の送電を切替制御する装置として幅広く利用可能である。 The DC power switching control device according to the present invention can be widely used as a device for switching control of transmission of DC power generated for each power generation unit of the power generation device.
　１００Ａ、１００Ｂ、１００Ｃ　発電装置（太陽電池アレイ）
　１１０Ａ１、１１０Ａ２、１１０Ｂ１、１１０Ｂ２、１１０Ｃ１、１１０Ｃ２　発電ユニット
　１２１、１２２、１２３、１２４、１２６、１２７、１２８、１２９　送電線
　１２５　分岐部
　１３０　接続箱
　１３１、１３２、１３３、１３４　通信回線
　２００、２００’　切替制御装置
　２１０、２１０’　直流電力切替部
　２１１、２１１’　電流センサ
　２１２、２１２’　電圧センサ
　２１３Ａ１、２１３Ａ２、２１３Ｂ１、２１３Ｂ２、２１３Ｃ１、２１３Ｃ２　切替スイッチ部
　２２０　制御部
　２３０　操作パネル
　２３１　計測表示部
　２３２　条件設定部
　２４０　情報端末
　２５０　通信部
　３００　パワーコンディショナー
　４００　分電盤
　５００、５５０　負荷
　６００　蓄電装置
　Ｓ１、Ｓ２　発電システム
  100A, 100B, 100C Power generation device (solar cell array)
110A1, 110A2, 110B1, 110B2, 110C1, 110C2 Power generation unit 121, 122, 123, 124, 126, 127, 128, 129 Transmission line 125 Branch section 130 Junction box 131, 132, 133, 134 Communication line 200, 200 ′ switching Control device 210, 210 'DC power switching unit 211, 211' Current sensor 212, 212 'Voltage sensor 213A1, 213A2, 213B1, 213B2, 213C1, 213C2 Changeover switch unit 220 Control unit 230 Operation panel 231 Measurement display unit 232 Condition setting unit 240 Information terminal 250 Communication unit 300 Power conditioner 400 Distribution board 500, 550 Load 600 Power storage device S1, S2 Power generation system

Claims (12)

  1. 　複数の発電ユニットを備える発電装置と、発電ユニット毎に発電される直流電力を送電する複数の送電線を備える発電システムにおいて、
    　発電ユニット毎に発電される直流電力をパワーコンディショナーに送電するにあたり、
    　各送電線の途中に、発電ユニット毎に発電される直流電力の電流値を検出する電流センサと、発電ユニット毎に発電される直流電力の電圧値を検出する電圧センサと、制御部からの制御信号により発電ユニット毎に送電線を接続モードと開放モードのいずれかに切り替える切替スイッチ部をそれぞれ設け、
    　前記パワーコンディショナーの規定容量に基づいて作動値を設定し、前記電流センサによって検出された電流値と前記電圧センサによって検出された電圧値から算出される発電ユニット毎の直流電力の合計値を前記作動値と比較し、直流電力の合計値が作動値を上回るとき、前記制御部が、パワーコンディショナーに送電する直流電力の合計値が前記作動値を下回るように、一または複数の切替スイッチ部を接続モードから開放モードに切り替えることを特徴とする直流電力の切替制御装置     In a power generation system including a power generation apparatus including a plurality of power generation units and a plurality of transmission lines that transmit DC power generated for each power generation unit,
    In transmitting DC power generated by each power generation unit to the power conditioner,
    In the middle of each transmission line, a current sensor that detects a current value of DC power generated for each power generation unit, a voltage sensor that detects a voltage value of DC power generated for each power generation unit, and a control from the control unit Each switch unit for switching the power transmission line between connection mode and open mode for each power generation unit by a signal is provided,
    An operation value is set based on a specified capacity of the power conditioner, and a total value of DC power for each power generation unit calculated from the current value detected by the current sensor and the voltage value detected by the voltage sensor is When the total value of DC power exceeds the operating value, the control unit connects one or more changeover switch units so that the total value of DC power transmitted to the power conditioner is lower than the operating value. DC power switching control device characterized by switching from mode to open mode
  2. 　一または複数の切替スイッチ部を接続モードから開放モードに切り替えた後、直流電力の合計値が再び作動値を上回るとき、前記制御部が、残りの切替スイッチ部のうち、一または複数の切替スイッチ部を接続モードから開放モードに切り替えることを特徴とする請求項１記載の直流電力の切替制御装置。 After the one or more changeover switch units are switched from the connection mode to the open mode, when the total value of DC power again exceeds the operating value, the control unit selects one or more changeover switches among the remaining changeover switch units. 2. The DC power switching control device according to claim 1, wherein the unit is switched from the connection mode to the open mode.
  3. 　直流電力の合計値が作動値を上回る毎に、予め設定された順序に従って切替スイッチ部を接続モードから開放モードに順次切り替えることを特徴とする請求項１または請求項２記載の直流電力の切替制御装置。 3. The DC power switching control according to claim 1, wherein each time the total value of the DC power exceeds the operating value, the changeover switch unit is sequentially switched from the connection mode to the open mode according to a preset order. apparatus.
  4. 　前記作動値は上作動値として設定され、当該上作動値とは別に下作動値を設定し、直流電力の合計値が下作動値を下回るとき、制御部が、開放モードに切り替わった切替スイッチ部を順次接続モードに切り替えることを特徴とする請求項１ないし請求項３のいずれか一項に記載の直流電力の切替制御装置。 The operation value is set as an upper operation value, a lower operation value is set separately from the upper operation value, and when the total value of the DC power is lower than the lower operation value, the control unit is switched to the open mode. The DC power switching control device according to any one of claims 1 to 3, wherein the switching is sequentially switched to the connection mode.
  5. 　各送電線の途中に発電ユニット毎に電流センサと電圧センサを設けずに、各送電線の途中に送電線毎に設けた切替スイッチ部の下流で合流し、パワーコンディショナーに向かう送電線の途中に、一組の電流センサと電圧センサを設けることを特徴とする請求項１ないし請求項４のいずれか一項に記載の直流電力の切替制御装置。 Instead of providing a current sensor and voltage sensor for each power generation unit in the middle of each transmission line, they merge downstream of the selector switch provided for each transmission line in the middle of each transmission line, and in the middle of the transmission line toward the power conditioner 5. The DC power switching control device according to claim 1, wherein a set of current sensor and voltage sensor is provided.
  6. 　複数の発電ユニットを備える発電装置と、発電ユニット毎に発電される直流電力を送電する複数の送電線を備える発電システムにおいて、
    　請求項１ないし請求項５のいずれか一項に記載の直流電力の切替制御装置を備えることを特徴とする発電システム。　     In a power generation system including a power generation apparatus including a plurality of power generation units and a plurality of transmission lines that transmit DC power generated for each power generation unit,
    A power generation system comprising the DC power switching control device according to any one of claims 1 to 5.
  7. 　複数の発電ユニットを備える発電装置と、発電ユニット毎に発電される直流電力を送電する複数の送電線と、各送電線から送電される直流電力を分岐して蓄電する蓄電装置を備える発電システムにおいて、
    　発電ユニット毎に発電される直流電力をパワーコンディショナーに送電しおよび／または蓄電装置に分岐して送電するにあたり、
    　各送電線の途中に、発電ユニット毎に発電される直流電力の電流値を検出する電流センサと、発電ユニット毎に発電される直流電力の電圧値を検出する電圧センサと、制御部からの制御信号により発電ユニット毎に送電線を接続モードと開放モードのいずれかに切り替える切替スイッチ部をそれぞれ設け、
    　各送電線から分岐して蓄電装置に向かう送電線の途中に、発電ユニット毎に分岐して送電される直流電力の電流値を検出する電流センサと、発電ユニット毎に分岐して送電される直流電力の電圧値を検出する電圧センサと、制御部からの制御信号により発電ユニット毎に分岐後の送電線を接続モードと開放モードのいずれかに切り替え可能な切替スイッチ部をそれぞれ設け、
    　前記パワーコンディショナーの規定容量に基づいて作動値を設定し、前記電流センサによって検出された電流値と前記電圧センサによって検出された電圧値から算出される発電ユニット毎の直流電力の合計値を前記作動値と比較し、直流電力の合計値が作動値を上回るとき、前記制御部が、パワーコンディショナーに送電する直流電力の合計値が前記作動値を下回るように、パワーコンディショナー側の一または複数の切替スイッチ部を接続モードから開放モードに切り替え、蓄電装置側の一または複数の切替スイッチ部を開放モードから接続モードに切り替えることを特徴とする直流電力の切替制御装置。     In a power generation system including a power generation device including a plurality of power generation units, a plurality of power transmission lines that transmit DC power generated for each power generation unit, and a power storage device that branches and stores DC power transmitted from each power transmission line ,
    In transmitting DC power generated for each power generation unit to the power conditioner and / or branching to the power storage device and transmitting power,
    In the middle of each transmission line, a current sensor that detects a current value of DC power generated for each power generation unit, a voltage sensor that detects a voltage value of DC power generated for each power generation unit, and a control from the control unit Each switch unit for switching the power transmission line between connection mode and open mode for each power generation unit by a signal is provided,
    A current sensor that detects the current value of DC power that is branched and transmitted for each power generation unit in the middle of the transmission line that branches from each power transmission line toward the power storage device, and a DC that is branched and transmitted for each power generation unit A voltage sensor that detects the voltage value of the power, and a changeover switch unit that can switch the transmission line after branching for each power generation unit to either the connection mode or the open mode by a control signal from the control unit,
    An operation value is set based on a specified capacity of the power conditioner, and a total value of DC power for each power generation unit calculated from the current value detected by the current sensor and the voltage value detected by the voltage sensor is One or more switching on the power conditioner side so that the total value of DC power transmitted to the power conditioner is less than the operation value when the total value of DC power exceeds the operation value. A DC power switching control device, wherein the switch unit is switched from a connection mode to an open mode, and one or more changeover switch units on the power storage device side are switched from the open mode to the connection mode.
  8. 　パワーコンディショナー側の一または複数の切替スイッチ部を接続モードから開放モードに切り替えると共に、蓄電装置側の一または複数の切替スイッチ部を開放モードから接続モードに切り替えた後、
    　直流電力の合計値が再び作動値を上回るとき、前記制御部が、パワーコンディショナー側の残りの切替スイッチ部のうち、一または複数の切替スイッチ部を接続モードから開放モードに切り替えると共に、蓄電装置側の残りの切替スイッチ部のうち、一または複数の切替スイッチ部を開放モードから接続モードに切り替えることを特徴とする請求項７記載の直流電力の切替制御装置。     After switching one or more changeover switch parts on the power conditioner side from the connection mode to the open mode, and after switching one or more changeover switch parts on the power storage device side from the open mode to the connection mode,
    When the total value of DC power again exceeds the operating value, the control unit switches one or more changeover switch units from the connection mode to the open mode among the remaining changeover switch units on the power conditioner side, and 8. The DC power switching control device according to claim 7, wherein one or a plurality of switching switches among the remaining switching units are switched from the open mode to the connection mode.
  9. 　直流電力の合計値が作動値を上回る毎に、予め設定された順序に従って、パワーコンディショナー側の切替スイッチを接続モードから開放モードに順次切り替えると共に蓄電装置側の切替スイッチを開放モードから接続モードに順次切り替えることを特徴とする請求項７または請求項８記載の直流電力の切替制御装置。 Each time the total value of DC power exceeds the operating value, the switch on the power conditioner side is sequentially switched from the connection mode to the open mode in accordance with a preset order, and the switch on the power storage device side is sequentially switched from the open mode to the connection mode. 9. The DC power switching control device according to claim 7, wherein switching is performed.
  10. 　前記作動値は上作動値として設定され、当該上作動値とは別に下作動値を設定し、直流電力の合計値が下作動値を下回るとき、制御部が、パワーコンディショナー側の開放モードに切り替わった切替スイッチ部を接続モードに順次切り替えると共に蓄電装置側の接続モードに切り替わった切替スイッチ部を開放モードに順次切り替えることを特徴とする請求項７ないし請求項９のいずれか一項に記載の直流電力の切替制御装置。 The operating value is set as an upper operating value, a lower operating value is set separately from the upper operating value, and when the total value of DC power falls below the lower operating value, the control unit switches to the open mode on the power conditioner side. 10. The direct current according to claim 7, wherein the changeover switch unit is sequentially switched to the connection mode, and the changeover switch unit that has been switched to the connection mode on the power storage device side is sequentially switched to the open mode. Power switching control device.
  11. 　各送電線の途中に発電ユニット毎に電流センサと電圧センサを設けずに、各送電線の途中に送電線毎に設けた切替スイッチ部の下流で合流し、パワーコンディショナーに向かう送電線の途中に、一組の電流センサと電圧センサを設けることを特徴とする請求項７ないし請求項１０のいずれか一項に記載の直流電力の切替制御装置。 Instead of providing a current sensor and voltage sensor for each power generation unit in the middle of each transmission line, they merge downstream of the selector switch provided for each transmission line in the middle of each transmission line, and in the middle of the transmission line toward the power conditioner The DC power switching control device according to any one of claims 7 to 10, wherein a pair of current sensor and voltage sensor is provided.
  12. 　複数の発電ユニットを備える発電装置と、発電ユニット毎に発電される直流電力を送電する複数の送電線と、各送電線から送電される直流電力を分岐して蓄電する蓄電装置を備える発電システムにおいて、
    　請求項７ないし請求項１１のいずれか一項に記載の直流電力の切替制御装置を備えることを特徴とする発電システム。     In a power generation system including a power generation device including a plurality of power generation units, a plurality of power transmission lines that transmit DC power generated for each power generation unit, and a power storage device that branches and stores DC power transmitted from each power transmission line ,
    A power generation system comprising the DC power switching control device according to any one of claims 7 to 11.
PCT/JP2017/022427 2016-06-20 2017-06-18 Direct-current power switching control device and power generation system WO2017221851A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2018524059A JP7018649B2 (en) 2016-06-20 2017-06-18 DC power switching control device and power generation system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016121825 2016-06-20
JP2016-121825 2016-06-20

Publications (1)

Publication Number Publication Date
WO2017221851A1 true WO2017221851A1 (en) 2017-12-28

Family

ID=60783238

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/022427 WO2017221851A1 (en) 2016-06-20 2017-06-18 Direct-current power switching control device and power generation system

Country Status (2)

Country Link
JP (1) JP7018649B2 (en)
WO (1) WO2017221851A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0984146A (en) * 1995-09-20 1997-03-28 Toshiba Corp Electric power managing system of electric appliance using network
JPH1094170A (en) * 1996-09-13 1998-04-10 Toshiba Corp Power consumption control system
JP2010245320A (en) * 2009-04-07 2010-10-28 Tokyo Electric Power Co Inc:The Solar power generation facility
WO2011142014A1 (en) * 2010-05-12 2011-11-17 東芝三菱電機産業システム株式会社 Connection device for electric power converters
JP2014158401A (en) * 2013-02-18 2014-08-28 Sekisui Chem Co Ltd Power conditioner, photovoltaic power generation system, method for controlling power conditioner, and method for controlling photovoltaic power generation system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000115921A (en) 1998-10-05 2000-04-21 Misawa Homes Co Ltd Distribution board

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0984146A (en) * 1995-09-20 1997-03-28 Toshiba Corp Electric power managing system of electric appliance using network
JPH1094170A (en) * 1996-09-13 1998-04-10 Toshiba Corp Power consumption control system
JP2010245320A (en) * 2009-04-07 2010-10-28 Tokyo Electric Power Co Inc:The Solar power generation facility
WO2011142014A1 (en) * 2010-05-12 2011-11-17 東芝三菱電機産業システム株式会社 Connection device for electric power converters
JP2014158401A (en) * 2013-02-18 2014-08-28 Sekisui Chem Co Ltd Power conditioner, photovoltaic power generation system, method for controlling power conditioner, and method for controlling photovoltaic power generation system

Also Published As

Publication number Publication date
JPWO2017221851A1 (en) 2019-05-16
JP7018649B2 (en) 2022-02-14

Similar Documents

Publication Publication Date Title
US8653694B2 (en) Junction box
JP5973612B2 (en) Power management system and power management method
US20120055530A1 (en) Junction box and solar power system
KR102261258B1 (en) Method and apparatus for bidirectional storage and renewable power converter
EP2892123A1 (en) Power flow control system, management device, and program
US8334617B2 (en) System and method for energy optimization in photovoltaic generators
KR101026353B1 (en) Monitor and control system of solar cell module using dc power line communication
AU2010285341B2 (en) Power regulating system for solar power station
JP6203016B2 (en) Solar power system
KR20160001249A (en) Home energy management system using photovoltaic generation and energy storage system
CN104836236A (en) Distribution panel for stand-alone micro-grid
KR102308376B1 (en) Photovoltaic system possible controlling of power transmission path
CN103595044B (en) A kind of diesel generating system being applied to isolated island microgrid
CN116195158A (en) Intelligent energy monitoring and selecting control system
US20210046840A1 (en) Method of operating a charging station for electric vehicles
WO2014010610A1 (en) Electrical power management device and electrical power management method
US10698433B2 (en) Power management apparatus, power management system, and method for power management
JP4711023B2 (en) Voltage setting device, photovoltaic power generation system, and voltage setting device control method
JP4561928B1 (en) Voltage setting device, photovoltaic power generation system, and voltage setting device control method
WO2017221851A1 (en) Direct-current power switching control device and power generation system
JP4631995B1 (en) Voltage setting device, photovoltaic power generation system, and voltage setting device control method
JP2015061402A (en) Energy management system
JP6168918B2 (en) Inverter
CN114530853A (en) High-safety power grid cooperative control system and method
KR101278113B1 (en) The high-efficient solar ray panel planting devices

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17815319

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2018524059

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17815319

Country of ref document: EP

Kind code of ref document: A1